Quote:
Originally Posted by Skid
Don't think so, the rolling radius should be the same otherwise the speedo would be out.
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In this case you are right as we run 45 profile tyres rather than 40/35s. But people often fit bigger wheels that do alter the radius without looking at the speedo adjustments needed.
Ride comfort can't be ignored though. Nor can vastly lower rubber costs! I'll be getting top notch tyres for mine next (Conti 3s or PS2s - still not decided). I looked at the costs for top end 18" 255/35s rubber and my eyes almost popped out!