Quote:
Originally Posted by Silver Streak
Them 19's on the Corvette have way more mass than the 21's on the camaro. But yes too big is bad, too little isn't good either.
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How do you know this? I'm not trying to be smart, I just find it hard to believe that a 21" cast wheel is lighter than a 19" forged.
The 19 inch wheel has a circumference of 59.7". Multiply that by its width (10" I think?) and you get a surface area of 597 for the hoop.
The 21 inch wheel has a circumference of 66". Multiply that by its width (9.5" I think for the back) and you get a surface area of 627.
Take into account that there's less spoke material required to make the 19" than the 21" and the fact that they Corvette wheels are forged (lighter), and I find it hard to believe the 19's have "way more mass" than the 21's.
Just my .02
But back to the thread topic, cars these days are being made with larger wheel wells, so require larger wheels to fill them up. This somewhat hides the proportionality imbalance of a 22" wheel to a relatively small 2-door car, which I think is a shame. The 18's on the GS concept don't really fill the wells, so I'm thinking some lightweight forged 19's should work just fine.