[roamio]

So I was playing with tire size calculator and looks like factory 22" tires are slightly different compared to 21". Is it by design? Or it makes no difference at all?

[remo999]

Hmm, I'm curious myself.......

[mmm50i]

I believe the difference is accounted for by the software (iDrive allows us to choose which tires on our car).

[eelnoraa]

Guys don’t need to mystify this. small difference doesn’t matter. Unless you are doing 100% straight in a perfectly flat surface, the front and rear wheel turn at small different speed anyway. The out side and inside wheel turn at different speed too. 0.7% is nothing to worry about. If you get up yo 3-4%, then I will start to worry.