Tyres again sorry

Best tyres and oil for your R1200RT/R1250RT get other users opinions here.
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Doctor T
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Re: Tyres again sorry

Post by Doctor T »

where do you find out what the codes M, C, O, etc mean?. All i can find is from Cambrian Tyre's



"[size=16px]The final piece of information is the tyre’s name and model. Using the picture above this would be Bridgestone’s “Battlax S20” with a letter “F” after it. The “F” denotes the tyre is a front tyre, whereas an “R” would denote a rear fitment. On occasion manufacturers also make model specific original equipment tyres, and in this case, a different letter may be used to signify that it is a special or specific tyre".[/size]
Last edited by Doctor T on Sat Feb 19, 2022 4:42 pm, edited 1 time in total.
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
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David.
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Re: Tyres again sorry

Post by David. »

The version codes mean that a particular tyre has been developed by the tyre manufacturer and approved/recommended for use by the motorcycle manufacturer for a specific model.

As an example, if using a Z8, the Metzeler fitment guide recommends front (M) and rear (O).
Last edited by David. on Sat Feb 19, 2022 5:04 pm, edited 1 time in total.
simbo
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Re: Tyres again sorry

Post by simbo »

Speed rating 'ZR'.. Weight rating Front '58W'.. Rear '73W'.. All the rest is just Hotpoint recommends Persil and 8 out of 10 Cats prefer Whiskers.
The GS 'is' the better bike :-)
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Doctor T
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Re: Tyres again sorry

Post by Doctor T »

Found that "E" & "O" means original equipment. Then there is "E" which means it's up to European standard. The others are just a code for the manufacturer or as Simbo says what washing temperature.
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
"Blessed are the cracked, for they shall let in the light". Groucho Marx
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Have i bought a money pit
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Re: Tyres again sorry

Post by Have i bought a money pit »

Doctor T wrote: Only ebay for £185 a pair. 6 months ago i paid £240. What comes to mind id they are fazing out the standard one and now only the SE versions. Hence the price drop some are passing on.
I had a pair of Metzeler Roadtec 01 SE's. Good tyres, but only lasted me approx 4500 miles.
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Re: Tyres again sorry

Post by David. »

Interesting that the only photos I've seen of this type of tyre wear is with Metzeler Z6's, Z8's and now 01's. They seem to break up in the centre and go down to the cords without much warning.

Z6
Image

Z8
Image

01
Image
Last edited by David. on Fri Feb 25, 2022 10:43 am, edited 1 time in total.
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Have i bought a money pit
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Re: Tyres again sorry

Post by Have i bought a money pit »

I was shocked! I'm no Mick Doohan. But would the heavyweight ones make a difference.....?
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Re: Tyres again sorry

Post by David. »

I used the correct recommended rear [C] version code Z6 but still experienced them breaking up in the centre and on one occasion, down to the cords.
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Re: Tyres again sorry

Post by David. »

Have I bought a money pit wrote:But would the heavyweight ones make a difference.
From what I can see, the HWM rear tyre has a 2 ply carcass to increase stability. The standard tyres only have 1 ply. Both appear to have the same dual compound rubber which presumably dictates how the tyre wears. If this is the case, the tyres might wear the same but give a different feel to the ride.
Last edited by David. on Sat Feb 26, 2022 9:46 am, edited 1 time in total.
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Re: Tyres again sorry

Post by David. »

http://www.cambriantyres.co.uk/wp-content/uploads/2021/10/10000000_253469976663261_7778191377401602459_n.mp4

This video is how an Avon tyre is manufactured. The carcass (plies) being built before the tread is fitted. If this is the same for all tyres, then it shows that the carcass construction and the tread are separate parts bonded together. When the tyre starts to break up in the centre, it's likely to be the bond between the carcass and tread de-laminating before showing the cords of the ply.
Last edited by David. on Sat Feb 26, 2022 1:51 pm, edited 1 time in total.
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