anyone know the benifits of lightweight wheels?

[kimona]

I find it hard to believe that reducing rotational weight by just a few pounds per corner will make any significant difference in fuel savings or acceleration.

[cleong]

Originally Posted by kimona54

I find it hard to believe that reducing rotational weight by just a few pounds per corner will make any significant difference in fuel savings or acceleration.

Unsprung weight is bad for handling. Unsprung rotational weight is worse. The bit less wheel weight makes your car accelerate and brake faster.

You see some racing cars run bigger wheels simply because they need to fit bigger brakes inside the wheels, for lower stiffer sidewalls, and because they have power to spare to turn monster 18 inch wheels.

Which is why I can't see the point of anything bigger than 16s on a Yaris. The car isn't fast as stock, you're making it slower by throwing wagon wheels on it.

[keesue]

Originally Posted by cleong

Unsprung weight is bad for handling. Unsprung rotational weight is worse. The bit less wheel weight makes your car accelerate and brake faster.

You see some racing cars run bigger wheels simply because they need to fit bigger brakes inside the wheels, for lower stiffer sidewalls, and because they power to spare to turn monster 18 inch wheels.

Which is why I can't see the point of anything bigger than 16s on a Yaris. The car isn't fast as stock, you're making it slower by throwing wagon wheels on it.

Well said.