Have a look a rota wheels and kei racing wheels, they do cheapish lightweight rims.

 

Rolling resistance....more rubber on the groung to push= more resistance, go from a 195 to a 205, 225 or so....thats alot of rubber on the ground to push around, and YES plus the weight of the wheel.

 

^^ sorry that's wrong. That effects rolling resistance while rolling but is practically negligible while accelerating. The mass being accelerated is still the weight of the car. The problem with decreased acceleration from the larger wheels comes from weight and the fact that the larger wheel generally has a larger moment of inertia because the weight is farther from the center of the wheel. I hope that made sense

 

Are you the same KarTuneMan from the 12volt?