well i finally got rim money and trying to decide on what rim and size i should get,iam stuck between racing hart cr or cx 2 piece and what size ,also why do people put to different sizes like 18.5 front 18.9 in the back does this effect performance at all i would think so? thanks guys

 

looks good with wider tires. i doubt it has any handling benefits.

 

Well too wide on the back might cause understeer. Also it will make it harder to drift.