Reply to "15" Wheel Upgrade!"

joules"Racing is Life, anything before or after is just waiting" - Steve McQueen

Scott raises some good points, I think what also needs to be considered is the wheel and tire combination; tire profile and rolling diameter play a significant role in the feel and response.

I'm betting all the perceived acceleration difference is simply due to tire diameter effectively impacting final drive ratio.

Higher profiles on 15" tires make for a more compliant sidewall as well, where the low profile modern tires are stiffer.

It is also interesting to note that the two examples quoted are both wide body cars, where the effect is likely pronounced due to the wheel offset.

A lot of wide body cars always look 'jacked up' with aftermarket wheels due to the aforementioned tire diameter change, this significantly raises the cars center of gravity, it should feel different!

If we are comparing wheel weight the only true comparison is between two wheels in equivalent diameter and tire size, anything else is really apples and oranges.

Julian

5/25/1710:30 AM

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