rim size

[bdc87]

Originally Posted by SailDesign

But they have different tires on them, which may well (read "WILL") make the difference. The wheel itself does nothing but support the tire. (For the pourists, Yes, a lighter wheel aids acceleration....)
"Responsive" and "fuel efficient" are interesting words to put together like that.

Yes it might of had something to do with the difference in weight, not sure how much the stock tires weigh? But the steelies are 14lbs and the Heliums 10.8lbs. However a lighter combo should and alteast for me gave me better mileage and the lighter weight made it more responsive. I've also read somewhere that the width is a factor in traction the only thing it seemed to affect was my mileage, also more rotational mass with larger wheels? I went down to 30mpg with the heliums and I'm at 36mpg with the steelies. My plan is to now get some Miata wheels and the lightest tire I can find.