Does going to 19-inch wheels from stock 18s cause THAT much of a performance decline? Does anyone have any numbers on this?

'04 DG Coupe

 

Most of the difference, if any, will depend on the weight. My 19"s with tires are each 5 lbs. lighter in the front and about 1.5 lbs lighter than the stock rears. Even though the mass is further away from the center(1/2"), I'd be willing to bet that the -13 lbs. of rotational mass actually improved the performance.

 

wow i love reading that post.... makes me feel more inclined to go with 19's (what i want for looks) without feeling like i'll be downgrading (performance)

2004 Black on Black g coupe 6spd.... <3 aluminum pedals, clear corners, z tube, and pop charger. From down south, houston tejas