this is not about useing what i can get cheap of e-bay a s i know a few rally teams that i can get tyres from.
want i want to find out is the reason ALL modern race /rally teams use the biggest diameter rim,tyre combo that the regs allow?
biggest prob with useing the 13/15 rubber is the overall gearing effect it will have on my car. with the currant 24/58/15 its topping out at 110mph@7000rpm which is not enough.
dont want to change the box as it has only done around 1500mile since being built and is just being fitted with a lsd.
imho the 9x15 rims i have at the moment are too wide for a bug, i dont have the power or wieght to make the tyre work enough to get up to temp so never get the best from the tyres.
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