Wheel Types

[Lyle's GTP]

I think this is the right area to post this. I'm choosing rims and tires right now. I'm concerned about weight. I heard from somewhere, that if you add 10 lbs of rotating mass to your wheels it's equivalent to 100 lbs of stationary mass. Anybody know about this? The reason I'm asking is I'm thinking of buying chromed steel rims for my car (might be kinda heavy compared to aluminum).

Lyle

[RebelGT]

well, there is no actual formula for this, since theres alot more to it then the overall weight of the wheel, it depends on the how the weight of the wheel is distributed. The further out from the center point the harder it becomes to turn.

[dykz34]

I can tell you that going from 225/60-16s to 245/40-18s slowed me down almost a half a second in the quarter mile. The weight difference was only 49lbs. for the stock wheels and 51lbs. for the 18's.

[RidgeRunner]

Dave, that shoulda helped some... very little weight difference, and a smaller overall diameter. Sure there's nothing else that coulda been a factor?

[RebelGT]

the differance is he went from 16's to 18's, and he increased the size of the tire, therefore he's pushing all the weight out towards the outer most edges.

[Lyle's GTP]

Well, I guess that's why drag cars don't use low-pro. Benefit's: Look great, handle better, better feel of the road. Negative's: Rough ride, lower times, harder on suspension/frame, not pot hole friendly.

Moral: Don't drag with them if you are serious.

Lyle