Quote:
Originally Posted by mla163
I used to agree with you. But GRM did a test a recently where they compared lightweight wheels against heavier wheels on an autocross course and it did add up. rotating mass does makes a difference. They even ran a test with the same car with lightweight wheels and extra mass mass in the trunk vs the same car with heavier wheels (same car, same weight one with light weight wheels, one without)
It wasn't a huge difference Iirc. 0.1 to 0.2 s or so. But I will take it.
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I vaguely remember that article. I got rid of all my back issues during a recent move, but what I took away was that a significant difference in wheel weight had a negligible effect during their test.
I couldn't find the article online, but it is highly referenced on various car forums and may be in the June 2011 issue.