Wheel sizing vs. power question

Originally Posted by daisuke149

it wont increase top speed....

some of you guys are making generalizations without understanding how it works.

the overall diameter of the wheel + tire is the item your looking for + weight.

If the wheel weights more, even if its the same size as your OEM, it would slow you down. Whether or not you will feel it, would be determined by how much weight is added.

If you upsize your wheels, you can downsize the side wall ratio to keep the same overall OEM diameter and therefor your TOP speed / acceleration would not be altered DUE to the size. it would, most likely be altered due to the weight and the shifting of the weight load to the outer radius where it would sap the most power.

I went to a 20x12 wheel, with a 325/25/20.

Run the calculations on the overall diameter compared toa 275/35/19. You will find my overall diameter is shorter by about .17" which technically means i should accelerate faster. but since its a 20x12 wheel with massive rubber, i know it weighs more than the OEM and therefore realistically would slow me down. Can i feel it? not really. I dont go full throttle everytime i drive my car all day long and so i wasnt attuned to the oem vs these. the car is still quick as hell.