how much does 18" rims effect performance?

[rsxballa]

I want to get rims but i need help making the decision of 17 or 18 inch. I have heard the 18"s can slow it down some and i was just wondering how much?

[crazy_canuck]

It can. It depends largely on the weight of the wheel. Without that info you can't say how much acceleration is gonna get killed.

And its basically looks (18s) vs. a slight performance gain and practicailty and price (17s) ....

[SiGNAL748]

Let me put it this way;

Lightweight 18's are still slightly worse than moderately weighted 17's

Its all about rotational mass.

[crazy_canuck]

Yeah, because the weight is farther from the center of the wheel in an 18 than it is on a 17.