BMW R1200RT/R1250RT forum

BMW R 1200RT => BMW R 1200RT tires/tyres, oils etc. => Topic started by: Levisp on 2014-12-12 21:34:58

Title: Metzelers Z8
Post by: Levisp on 2014-12-12 21:34:58
Hi all just bought a pair of Z8 for £184 inc VAT and Delivery from


http://www.oponeo.co.uk/moto-tyre/metzeler-roadtec-z8-interact (http://www.oponeo.co.uk/moto-tyre/metzeler-roadtec-z8-interact)


I've used this company 3 times now for tyres and have always been very impressed with their service and price.


Website is shit not the easiest to navigate. ( Oponeo website not this website )
Title: Re: Metzelers Z8
Post by: STeinar on 2014-12-13 09:06:34
Thank you Levisp - price is good, but to far away for me in Norway  ;)




But from your comment "Website is shit not the easiest to navigate." - How or what could be done to help the navigation - What could be done differently ?
Any hint is appreciated. 


STeinar
Title: Re: Metzelers Z8
Post by: Levisp on 2014-12-13 10:45:06
HI


Tyres did not come from UK but started their journey from DPD just North of Eindhoven


DPD (Nederland) B.V.[/font]Tormentil 10NL 5684PK Best


Took 3 days from order to delivery to UK. I think thats efficient.


My comment regrading the website refers to the Oponeo website NOT this site. Sorry for the confusion.


The Oponeo website is very clunky to find a particular tyre make. Try looking for Z8 The default home page Oponeo.co.uk goes to a page referring to car tyres. Not obvious from this that they sell motorcycle tyres. Scroll down the page to the bottom and there is a link to motorcycle tyres if you look hard enough. From this page the fun starts to find Z8. When you do find the page they list 6 tyres of size 180/55. You then have to select each one in turn to find the specification for your bike e.g. RT is type C. This information should be in the link. Rant over ! Feel better now ;D
Title: Re: Metzelers Z8
Post by: David. on 2014-12-13 11:35:02
Are these the tyres you purchased, they list 4 front 120/70 tyres, E, F, M & Standard version codes.

Metzeler Roadtec Z8 Interact 120/70 ZR17 (58 W) Front TL M/C (Standard):- http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-120-70zr17-58-w-front-tl-m-c#77908231

Metzeler Roadtec Z8 Interact 180/55 ZR17 (73 W) Rear TL M/C (C):- http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-180-55zr17-73-w-rear-tl-m-c-c#78589953
Title: Re: Metzelers Z8
Post by: Levisp on 2014-12-13 12:03:46
David the front tyre was type M.


These are what BMW specify for Metzelers on R 1200RT K52
Title: Re: Metzelers Z8
Post by: David. on 2014-12-13 12:23:50
Thank you, the Standard Spec. Front is for R 1200RT, K26 Model code: 0430.

BMW recommended Tyre Options:- http://www.bmw-motorrad.com/com/en/index.html?content=http://www.bmw-motorrad.com/com/en/services/tyres/tyres_main.html

Front M Spec. for R 1200RT K52:- http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-120-70zr17-58-w-front-tl-m-c-m#77496785

Is there a discount if you buy a pair?
Title: Re: Metzelers Z8
Post by: Levisp on 2014-12-13 12:37:31
No problem. My Conti's have done 5000 miles of which half has been two up and the front is still good but the rear has squared off with 3 mm remaining. Dying to fit the Z8s. However I'm going to clock up a few more miles maybe fit them when I do the 6K service or when the rear hits 2 mm.



Title: Re: Metzelers Z8
Post by: David. on 2014-12-13 12:40:42
Do you fit your own tyres?
Title: Re: Metzelers Z8
Post by: Levisp on 2014-12-13 12:58:30
Yes. Its not that hard with the right hand tools.
Title: Re: Metzelers Z8
Post by: richardbd on 2015-01-19 19:35:28
Interesting.  My RT came with Metzelers fitted.  I'm probably going to replace them with Pilot Road 4s when they wear out.  I can't really explain why (the Metzleers haven't given me any reason to mistrust them) but I just feel better on PR4s...



Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-30 19:21:42
Well finally got round to fitting Z8. Spent all day on Wed in the garage fitting the tyres and cleaning all those areas where you only have access to when the wheels are off. The OEM Contis lasted 6630 miles. Could have gone to 7K but decided to change before the cold snap reached the South. Thursday the roads were dry so went for a tyre scrubbing session. Tyres felt good but new tyres always do, time well tell if they are any better than the Conti Road Attack 2s.


Just for information one of the jobs I did was clean and check the brakes. Front pads were fine but the rear are nearly worn out. Probably have to replace mine by 8K max. I'm light on brakes so surprised on the wear rate. If your heavy on the brakes then I don't think the rear pads would last between services. Maybe something LC owners should check regularly.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-30 20:06:11
Surprised about the back brake wear. Do you regularly use it independently ie not on the hand lever.   
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-30 20:57:16
RTMan10 I do use the back brake from 10 mph to stop rather than the front because I find it smoother. But otherwise do not use it excessively. I tend to be a smooth rider planning well ahead so I consider myself light on brakes. Use a lot of engine braking. However the brakes are linked so my understanding is that anytime you use the front brake the rear is used too. I guess this is why it wears so fast.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-30 21:15:23
You are quite right, use the front and the back is applied as well but only marginally.  Its using just the back that seems to wear it rapidly. It is after all doing the work of 3 brakes.  Ask any GS owner, they seem to get through them in no time.   
Title: Re: Metzelers Z8
Post by: Spencert231 on 2015-01-31 13:50:33
You are quite right, use the front and the back is applied as well but only marginally.  Its using just the back that seems to wear it rapidly. It is after all doing the work of 3 brakes.  Ask any GS owner, they seem to get through them in no time.


Mmm! interesting you have reminded me the RT has interlinked braking I do seem to ride old school i.e. Front brake at high speed back brake slow manoeuvres. You say if you use the back brake independently you wear the pads out quicker? Does that mean slow manoeuvres I use my front brake only? In which case why have a back brake? I do like my back brake
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-31 14:06:06
One of the reasons I use the back brake from 10 mph to stop is its smoother particularly with a pillion and with traditional front suspension stops the front fork dive. However the BMW doesn't have the front compression because of its Telelever suspension setup. Back brake braking is also useful on loose and slippery surfaces. However the front brake is the primary stopping tool.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 14:40:50
As BMW have gone to the trouble of developing a computer controlled semi linked braking system I see  no reason to override it by just jumping on the rear brake.  Im sure there are situations when you only want to use the back brake, U-turns etc but in normal riding hardly ever.
The LC is too new for most of us to put big mileage on them and the rear brake is different from the last one but I cannot see them wearing any quicker than the old one.   On previous RTs I have seen 24K on the same rear pads and most if my riding is two up.   I suppose it all defends on your ridding style.
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-31 14:58:52
24K on rear pads !! Blimey thats good. I'm sure BMWs fancy braking system is brill but sometimes habits good or bad are hard to break. However I do not "Jump" on the back brake, I use it very gently. Also I'm not accidentally braking because I ride with the balls of my feet on the pegs. Thats why I was surprised to see the wear rate I have. I did read in another forum that someone thought that with the semi active suspension that the computer applied occasional back brake to settle the bike under certain circumstances. Dynamic mode was suggested as the culprit. Personally I think its bullshit but who knows.
Title: Re: Metzelers Z8
Post by: David. on 2015-01-31 15:38:13
The subject of using the rear brake, takes me back to a RoSPA Test in 2009.

The Examiner highlighted that I had a tendency to put my right foot down when stopping on the flat, (bringing the bike to a stop on the front brake).
I used my left foot whenever I was on an incline, (ready for a hill start). "This is the preferred technique for all occasions".

Since then, I have taken on-board this technique & find the bike is under better control, more stable & pillion friendly when coming to a final stop.

On my 2010 RT, the rear brake pads were replaced at 24,000 miles.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 15:56:46
The subject of using the rear brake, takes me back to a RoSPA Test in 2009.

The Examiner highlighted that I had a tendency to put my right foot down when stopping on the flat, (bringing the bike to a stop on the front brake).
I used my left foot whenever I was on an incline, (ready for a hill start). "This is the preferred technique for all occasions".

Since then, I have taken on-board this technique & find the bike is under better control, more stable & pillion friendly when coming to a final stop.
Not sure about that.  With the cook on board its always both left and right stabilisers down when stopping.   
Title: Re: Metzelers Z8
Post by: David. on 2015-01-31 16:05:29
Cleveland RoADAR - Bike Test, http://www.cleveland-roadar.co.uk/bike-test/

"The examiner will expect you to show proper use of the accelerator and brakes.

There will probably be at least one hill start on the test. You should always have the back brake covered when you are stationary, even on the flat, but you should show consideration for your machine by selecting neutral gear when stopped for long periods."

It could be interesting to know what the Examiner would make of "Hill Start Control" if fitted on your RT LC.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 16:12:07
Ah, got another problem now. Covering the foot brake would probably disengage the Hill Start Assist  Better stay well clear of the examiners.
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-31 16:16:20
Hill start assist is banned !
Title: Re: Metzelers Z8
Post by: David. on 2015-01-31 16:21:11
To show a brake light whilst stationary, obviously requires either the front or rear brake lever/pedal being applied.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 16:26:36
Hill start assist is banned !
On what? Is this some rule that came out last year as I don't think any bike had such a system before March 2014.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 16:31:16
To show a brake light whilst stationary, obviously requires either the front or rear brake lever/pedal being applied.
It is as the back brake is solidly on until you start to pull away.
Title: Re: Metzelers Z8
Post by: David. on 2015-01-31 16:35:32
BMW Rider's Manual R1200RT LC - Hill Start Control

Firmly pull and then release handbrake lever.

Telltale light for Hill Start Control appears in the display.

Hill Start Control is activated.

Pull handbrake lever again to switch off Hill Start Control.

Hill Start Control is deactivated automatically when the motorcycle pulls away.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 16:43:18
Makes holding the bike on the foot brake a bit redundant I would suggest.  Works downhill and on the flat as well by the way. 
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-31 16:52:48
Hill start assist banned ! No just my little joke after reading the Cleveland RoADAR info.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 17:02:36
Thank God for that.  Iv already forgot how to stand still without it, as I have to get from A to B without a Nav V.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 17:34:22
Hill start assist banned ! No just my little joke after reading the Cleveland RoADAR info.
Just had a look.  Life's not long enough to take it all in.
Title: Re: Metzelers Z8
Post by: Levisp on 2015-01-31 17:42:51
I Know it made my head hurt  :thinking:
Title: Re: Metzelers Z8
Post by: stelyn on 2015-01-31 17:45:23
I Know it made my head hurt  :thinking:
     SNAP.... :-\
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-01-31 17:52:08
Right, Any further discussions of  brake pads, hill starting or legs down is banned for the rest of the weekend PLEASE.
Title: Re: Metzelers Z8
Post by: richardbd on 2015-02-01 21:11:20
I really like the hill-start widget.  Didn't think I would but I do...


Took me a while to get used to the way it starts moving just when you think it's going to stall but once you get used to it, I think it's really cool.



Still trying to work out why the icon on the dash is yellow sometimes and white others though - maybe I should RTFM!!!
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-02-01 22:07:30
Let us know when you have, Iv not noticed it did that.
Just had a look, cant find any mention of colour change to the icon. Its a mystery. See page 67 and 100.
Title: Re: Metzelers Z8
Post by: richardbd on 2015-02-01 22:26:09
Let us know when you have, Iv not noticed it did that.


will do!
Title: Re: Metzelers Z8
Post by: Levisp on 2015-02-26 19:10:39

Front M Spec. for R 1200RT K52:- http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-120-70zr17-58-w-front-tl-m-c-m#77496785 (http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-120-70zr17-58-w-front-tl-m-c-m#77496785)

Metzeler Roadtec Z8 Interact 180/55 ZR17 (73 W) Rear TL M/C (C):- http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-180-55zr17-73-w-rear-tl-m-c-c#78589953 (http://www.oponeo.co.uk/moto-tyre-details/metzeler-roadtec-z8-interact-180-55zr17-73-w-rear-tl-m-c-c#78589953)


I see the price has gone done £172 for a pair.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-02-26 19:58:10
If you pull the front lever you are always using both brakes.  Its not possible just to use the back.  All RTs have been like that since 2005. On the 1150s they were fully linked and if you just pressed lightly on the foot brake when going slowly you tended to stop dead.   
I trust in the bikes technology to judge how much power to apply to the back one so only use the back independently at a stand still.  With the LC I don't even need to do that any more. PS Don't care what all the "experts" say, it works for me.   
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-02-26 20:21:15
If you pull the front lever you are always using both brakes.  Its not possible just to use the back.  All RTs have been like that since 2005. On the 1150s they were fully linked and if you just pressed lightly on the foot brake when going slowly you tended to stop dead.   
I trust in the bikes technology to judge how much power to apply to the back one so only use the back independently at a stand still.  With the LC I don't even need to do that any more. PS Don't care what all the "experts" say, it works for me.

Oops.  Commented on the last thread in page 1. 
Title: Re: Metzelers Z8
Post by: Levisp on 2015-02-26 21:00:59
Not sure thats quite correct. My understanding is that the front and rear brakes are linked only when using the front brake lever. The amount of front to rear brake is controlled by the ABS computer. However the rear brake can be applied by itself using the foot brake.
Title: Re: Metzelers Z8
Post by: RTman10 on 2015-02-26 21:14:54
Not sure thats quite correct. My understanding is that the front and rear brakes are linked only when using the front brake lever. The amount of front to rear brake is controlled by the ABS computer. However the rear brake can be applied by itself using the foot brake.
That's correct.  If you use the hand lever you will always use both brakes.  The back only works by its self on the foot lever.
Title: Re: Metzelers Z8
Post by: Levisp on 2015-02-26 21:29:04
Thank goodness for that thought I was losing it. Your comment "Its not possible just to use the back" threw me.
Title: Re: Metzelers Z8
Post by: David. on 2015-02-28 22:28:16
Looks like Z8's can suffer the same problems as Z6's, that is, they can go down to the cords without too much warning,
http://www.gaijinriders.com/showthread.php?8565-Metzeler-Roadtec-Z8-Interact-Review.
Title: Re: Metzelers Z8
Post by: David. on 2015-04-09 23:32:42
Metzeler Roadtec Z8 & Z6 for comparison.

(http://www.metzeler.com/site/uk/mediaObject/MetzelerSite/CommonImg/Product/Tyres/Roadtecz8interact/product_sheet_roadtecz8interact-default_460x500_jpeg/original/product_sheet_roadtecz8interact-default_460x500_jpeg.jpg) (http://www.metzeler.com/site/uk/mediaObject/MetzelerSite/CommonImg/Product/Tyres/Roadtecz6/product_sheet_roadtecz6_460x500_jpeg/original/product_sheet_roadtecz6_460x500_jpeg.jpg)
Title: Re: Metzelers Z8
Post by: Chad on 2015-04-10 09:20:54
I've had those tyres on my F800st Dave. I'd forgotten about those until I saw the tread pattern. I got good mileage out of them & they handled fine- no problems at all in the dry. I wasn't as happy in the wet but tbh I didn't have any issues. I had metzelers on when I bought it & I replaced them with metzelers. The rear wore out much sooner that the front. I seem to remember I got about 6k from the rear but over 8k on the front, which was a topic of conversation with my mates. I didn't ride two up & used this bike right through 2 winters.
Interestingly, I noticed a s1000rr at Helmsley last weekend, with a pair of continental road attacks on! That did surprise me.
Title: Re: Metzelers Z8
Post by: David. on 2015-04-10 14:23:33
I've had those tyres on my F800st Dave.

Z8 or Z6?
Title: Re: Metzelers Z8
Post by: Chad on 2015-04-10 15:12:43
Those in the bottom picture first & then those in the top picture.
Title: Re: Metzelers Z8
Post by: David. on 2015-04-10 16:44:18
Looks like you switched from Z6's to Z8's.
Title: Re: Metzelers Z8
Post by: Chad on 2015-04-11 12:56:54
I tend to go for tyres that are good on corners & good in the wet. Longevity & cost is irrelevant to me. (Obviously the choice is restricted by the type of bike). If I've changed its probably because the Z8's were considered better than the z6's in this respect.
Title: Re: Metzelers Z8
Post by: daverj on 2015-05-28 20:29:51
I love my Z8 interact prefer them PR3 and I love my back brake. My normal riding style means my rear is too hot to pinch it and the fronts are only tepid
Title: Re: Metzelers Z8
Post by: David. on 2015-10-22 15:19:12
Just been speaking to a Guy who got over 9,000 miles out of a pair of Z8's, that's good going in my book.
Title: Re: Metzelers Z8
Post by: David. on 2015-11-01 10:09:29
Just been speaking to a Guy who got over 9,000 miles out of a pair of Z8's, that's good going in my book.

He has now switched to Michelin PR4 GT's, will be interesting to see how they perform.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-13 17:47:18
The original BMW recommended Roadtec Z8's for my 2012 RT were, front "Standard" and rear "C" specification.

R 1200 RT 120/70 ZR 17 M/C (58W) TL Roadtec Z8 Interact M. 180/55 ZR 17 M/C (73W) TL Roadtec Z8 Interact C.

R 1200 RT 120/70 ZR 17 M/C (58W) TL Roadtec Z8 Interact M. 180/55 ZR 17 M/C (73W) TL Roadtec Z8 Interact O.

Please can anyone confirm that the front "Standard" has now been replaced by "M" spec. and the rear "C" is now an "O" spec.

I believe that front "M" and rear "O" may be the current fitment for LC 1200/1250 RT's.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 10:19:06
My tyre fitter of choice, NBT, has confirmed that the above is correct.

For Z8's, I'd need an "M" spec. for the front and "O" spec. for the rear, https://www.nationalbiketyres.co.uk/metzeler/roadtec-z8

Z6's are still available, https://www.nationalbiketyres.co.uk/metzeler/roadtec-z6 but the rear is not in a "C" spec. (now "O").
Metzeler themselves suggested that a Standard Z6 front could be used with an "O" spec. Z8 rear.

With Dunlop Roadsmarts now discontinued and not wishing to mix front & rear tyres, it looks like my next set will be Z8's.

Any feedback on Z8's would be most welcome, are new 1250 RT's coming supplied with them.
Title: Re: Metzelers Z8
Post by: Casbar on 2019-09-14 15:35:55
Yes my 1250 came with Z8s. I have found them fine so far, done just over 3k on them
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 15:58:06
Yes my 1250 came with Z8s.

Are the version codes "M" front and "O" rear, thanks.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 16:42:45
The Metzeler 2019 Technical Databook can be downloaded from here, https://www.metzeler.com/en-ww/products/technical-data-book see page 80/81 for RT's.
Title: Re: Metzelers Z8
Post by: Casbar on 2019-09-14 16:43:43
Are the version codes "M" front and "O" rear, thanks.


Just checked, def a M on the front, the rear looks like a square C but guess could be an O, if it is O its an incomplete O more like an oblong O with a bit missing.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 16:48:30
Just checked, the rear looks like a square C.

The rear will be a "C" version code, as confirmed by the Tech. Databook page 81, thanks.

R 1250 RT MY 2019 - 120/70 ZR 17 M/C (58W) TL Roadtec Z8 Interact M, 180/55 ZR 17 M/C (73W) TL Roadtec Z8 Interact C.
Title: Re: Metzelers Z8
Post by: beemerboy9 on 2019-09-14 21:33:53
The rear will be a "C" version code, as confirmed by the Tech. Databook page 81, thanks.

R 1250 RT MY 2019 - 120/70 ZR 17 M/C (58W) TL Roadtec Z8 Interact M, 180/55 ZR 17 M/C (73W) TL Roadtec Z8 Interact C.



Just had a look at the Metzeler Germany website. For the 1200RT LC both the "C" and the "O" are recommended for the rear.


If I remember rightly the "O" was the spec to go for at the time.


For the 1250RT, only the "C" appears to be recommended.


No Roadtec 01 is recommended for the 1250RT


However.............


For the Yamaha FJR1300 the Z8 is recommended in "O" spec (rear) as are the Roadtec 01s.


Trying to follow the logic of the German allowed tyre combinations absolutely does my head in.


My thought - just be sensible and choose a suitable tyre. Remember that the Germans have to allow for sustained cruising at near maximum speed, two-up and fully loaded.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 23:05:23
No Roadtec 01 is recommended for the 1250RT.

From the 2019 Metzeler Technical Databook

R 1250 RT MY 2019 - 120/70 ZR 17 M/C (58W) TL Roadtec 01. 180/55 ZR 17 M/C (73W) HWM TL Roadtec 01.

R 1250 RT MY 2019 - 120/70 ZR 17 M/C (58W) TL Roadtec Z8 Interact M. 180/55 ZR 17 M/C (73W) TL Roadtec Z8 Interact C.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-14 23:34:55
Looks like the "O" spec. may have originally been introduced in 190/55 ZR17 for large tourers, e.g. BMW K 1600 GT, http://www.cambriantyres.co.uk/o-spec-roadtec-z8-interact-for-large-tourers/

Both the "C" and "O" specs. are listed for my 2012 RT. The original BMW recommendations for Z8's are "Standard" front and "C" rear. I used to run a Z6 "C" spec. on the rear.

Based on the latest 1250's coming with a "C" spec. rear, there doesn't seem any particular reason to fit an "O" spec.
Title: Re: Metzelers Z8
Post by: beemerboy9 on 2019-09-15 08:15:29
Looks like the "O" spec. may have originally been introduced in 190/55 ZR17 for large tourers, e.g. BMW K 1600 GT, http://www.cambriantyres.co.uk/o-spec-roadtec-z8-interact-for-large-tourers/ (http://www.cambriantyres.co.uk/o-spec-roadtec-z8-interact-for-large-tourers/)

Both the "C" and "O" specs. are listed for my 2012 RT. The original BMW recommendations for Z8's are "Standard" front and "C" rear. I used to run a Z6 "C" spec. on the rear.

Based on the latest 1250's coming with a "C" spec. rear, there doesn't seem any particular reason to fit an "O" spec.


......apart from this comment from the website that you refer to


" 100% silica shoulder compound offers significantly increased grip on wet surfaces, and excellent grip when cornering too."


David, thanks for finding out about the "O" spec tyre. I did not know the difference, but I do remember some road testers raving about them at the time.


.... and why does it not surprise me that the website and the technical manual are out of step  :alas: . Thanks for correcting me there as well.


Kind Regards,


John
Title: Re: Metzelers Z8
Post by: David. on 2019-09-15 08:49:47
I've emailed Metzeler for some clarification on tyre fitment for my 2012 RT.

BMW originally recommended a "Standard" (no version code) for the front and a "C" (special version) for the rear. Both these tyres are listed in their 2019 Databook.

Metzeler now list an "M" for the front and either a "C" or "O" for the rear. Have asked, "Is there any reason to fit the "O" version rather than the "C" version on the rear".

If/when I get a reply, I'll share the details.
Title: Re: Metzelers Z8
Post by: David. on 2019-09-17 10:32:50
Had a phone call from Pirelli/Metzeler, they have confirmed the following.

The front "M" spec. is now their "Standard" tyre and the rear "C" spec. (now discontinued) has been replaced by the "O" spec.

There will be some old stock "C" spec. rear tyres still floating about, hence, as confirmed by Casbar, some new 1250's have this tyre fitted.

Once the stock of "C" spec. tyres is exhausted, you would expect to see bikes coming through with an "O" spec. rear.

If I choose to fit Z8's, I'll put an "M" on the front and "O" on the rear.

Hopefully, this clarifies any previous confusion over Metzeler tyre specifications.
Title: Re: Metzelers Z8
Post by: David. on 2020-05-30 18:19:19
If you have Z8's fitted, it's likely that the rear will be 'C' spec. version.

Back in 2013, Metzeler released an 'O' spec. version for large tourers, initially in 190/55 ZR17. An 'O' spec. version is now available in 180/55 ZR17 for RT's.

"The 'O' spec. tyre boasts excellent performance in the wet, and when compared with the ‘C’ spec version already on the market it offers 30% more mileage."

If this is the case and you're happy with Z8's, would you switch from 'C' to 'O' spec. on the rear. The front would remain as a 'Standard' or 'M' spec.

Using M&P for prices, the 'C' spec. is £106 and the 'O' spec. is £122. For an extra £16, a 15% increase in cost for a 30% increase in mileage.

M&P do a pair deal for £175, https://www.mandp.co.uk/products/120-70zr17-180-55zr17-gt-roadtec-z8-tyre-pair-tp-589785-589786
Checking the Product Codes, the front is 'Standard' and the rear is an 'O' spec, seems like a good deal. Give them a call to confirm.
Title: Re: Metzelers Z8
Post by: David. on 2020-07-22 15:34:14
Found this 2020 Metzeler Technical Databook, https://d1ykpo4jhzi0cx.cloudfront.net/download/en-uk/1531130569667/metzeler_tdb_2020_lr_v2.pdf

Might be useful when selecting Metzeler tyres.
Title: Re: Metzelers Z8
Post by: Beagle on 2020-07-22 16:25:13

Mmm! interesting you have reminded me the RT has interlinked braking I do seem to ride old school i.e. Front brake at high speed back brake slow manoeuvres. You say if you use the back brake independently you wear the pads out quicker? Does that mean slow manoeuvres I use my front brake only? In which case why have a back brake? I do like my back brake


Back brakes handy for hill starts.
Title: Re: Metzelers Z8
Post by: David. on 2020-08-05 14:08:11
Their Z8’s are £200, must be such a popular tyre so no need to discount.

https://www.bikespeeduk.com/index.php?act=viewCat&catId=130 (https://www.bikespeeduk.com/index.php?act=viewCat&catId=130)

https://www.ebay.co.uk/i/182617844357
Title: Re: Metzelers Z8
Post by: Beagle on 2020-08-05 14:23:01
Bikespeed must be able to sell at £200
Title: Re: Metzelers Z8
Post by: David. on 2020-08-05 15:04:56
National Bike Tyres can sell them for £195, https://www.nationalbiketyres.co.uk/metzeler-pair-deals/roadtec-z8-pair-deals?product_id=36652
Title: Re: Metzelers Z8
Post by: Beagle on 2020-08-05 16:13:19
National Bike Tyres can sell them for £195, https://www.nationalbiketyres.co.uk/metzeler-pair-deals/roadtec-z8-pair-deals?product_id=36652 (https://www.nationalbiketyres.co.uk/metzeler-pair-deals/roadtec-z8-pair-deals?product_id=36652)


Yes.
Title: Re: Metzelers Z8
Post by: David. on 2020-08-05 16:56:02
If & when Dunlop Roadsmarts become unavailable, Z8's are likely to be my choice of tyre.

Had Metzeler Z6's in the past.
Title: Re: Metzelers Z8
Post by: jackronner on 2020-08-05 21:07:27
My rear brakes also wear out quickly, despite my having acclimated to the dual braking and use the front brakes almost exclusively.  However, on both my RT's I've noted that using the rear brake only that it has very little stopping power compared to my host of other makes.  I use it only on slow maneuvering, using it while still applying power to the wheels, letting up on the brake to move forward incrementally rather than feathering the clutch. Seems more controlled and precise with the brake, especially riding two up.