Noisydad wrote:Bigger diameter eats horsepower like you wouldn't believe and will make your speedo wrong and your missus cuss you.
You get triple whammy on that too.
Decreased torque because you're trying to turn bigger wheels, worse fuel economy because of it, and decreased braking because the road has more torque on you.
Personally I think bigger wheels are a step backwards overall in most cases. If you absolutely positively had to have them you'd want to get the differential re-geared to suit the change and bring the speedo, power and economy back into shape, but that turns adding a new set of tyres into a lot of work/$$$$$$.