Author Topic: tyres uk law???? (Read 3024 times)

matt_400bandit · « **on:** December 09, 2006, 01:05:44 PM »

what is the law in the UK on tyres because on my b4 ihave a 120/60 zr 17 tyre and the manufactures spec is 110/70 zr 17 and my local tyre dealer told me that if i where to have an acident my insurance wouldnt cover me because the incorect size rubber is fitted to my bike, is this right ???? where can i find out information like this ????

gsxr400 racer · « **Reply #1 on:** December 09, 2006, 02:13:05 PM »

Im a firm beleiver of never do that on the front the rear is no problem im just a pain in the butt like that!

Banditmax · « **Reply #2 on:** December 10, 2006, 08:04:49 AM »

Fitting the 120 to the front will upset your bikes handling. The tyre fitters are doing you with a fast one saying that your insurance wont pay out though. Unless the tyre doesnt fit properly and it is bulging out or something.

Forde · « **Reply #3 on:** December 11, 2006, 08:36:48 AM »

As far as i know you can change the tyre dimensions if you want. If its still a road legal tyre youre fine.

matt_400bandit · « **Reply #4 on:** December 11, 2006, 12:34:10 PM »

cheers guys i'll get a new set of rubbers in the spring for the summer, now ive got my fueling problem to sort see post http://forums.banditalley.net/viewtopic.php?t=7760 Cheers For All Your Help Guys And Girlz

Bartjan · « **Reply #5 on:** December 11, 2006, 12:36:14 PM »

fitting a 120 tyre on a rim made for a 110 tyre will make the tyre more curved.
this changes the characteristic of the tyre (which is 30% of the total suspension of the bike), sideward stability changes because the sides of the tyres are deformed.
and there is LESS grip because the tyre is more curved

which will have the following effects:
- the motorcycle will want to come upwards in turns
- the tyre will wear faster then normal

info available thanks to a tyre specialist, who is not me