Quote Originally Posted by Kevin View Post
That's becuase it's not how the 5% rule works.

You take the ratio of the stock front tyres to stock rear tyres, ie the 'standard ratio'.

Then with whatever tyres you get, the ratio of the new tyres has to be within 5% of the ratio of the stock tyres, ie the 'new ratio' has to be within 5% of the 'standard ratio'.

hiya - wonder what is the significance of this 5% rule? How does it affect the abs/tcs and perhaps more importantly/interestingly why would it affect these systems if >5%?

cheers

v