There is no doubt it is faster with the 18" rims and stock tires vs 20's and wide tires, but with as much as it breaks free I burn through tires more often than I go through oil changes using the 18's. With the 20's the weight seems to come into play both negatively for acceleration for sure, but also the highway ride seems to be better with the 20's. They look obnoxiously huge as well and as soon as I wear out the rubber it's back to the stock wheels.
I'm not debating that the smaller rims are better, I agree that they are and had I taken some measurements and done a little research before dumping cash on the 20's I probably would have just bought a nicer set of 18's and good rubber for them.
Last edited by roadtrip1098; 05-01-2012 at 12:16 PM.