Originally Posted by Dirt Bringer
I saw a post in a separate forum where an XV owner put 20 inch rims on his XV. Now, I admit, this is kind of ridiculous, but that being said, is it possible to put 18's on the Impreza, given it has the same general driveline and engine? If the tires are the right size, would it still perform normally or would that have a strongly detrimental effect on acceleration?
it might affect it. you will have more mass located further from the hub. it will take more power to get the wheels spinning. it will also require more brake to get the wheels stopped.
if you found light enough wheels, i don't think the effect would be much if any, but heavy wheels for sure what I posted above