wheel weight vs. wheel size.

[Gary L]

Larger diameter tires will change the gearing, but will have zero affect on torque.

Well now, wait a minute...

If you don't compensate for the larger diameter tires by changing some other gearing component, you will shift the entire torque curve to a higher ground speed. Therefore, to say it there is zero effect is not entirely true, IMO.

[Flyinglizard]

Smaller OD, goes fastest with these little cars. Up to about 400hp. Do a search and you'l find back to back test. I have raced the same car with many diff OD wheels. Smaller has alway been faster. Polar moment, leverage,inertia, yada yada.. I'll put cash on it.
MM

[StephenB]

Thanks everyone. This is exactly the type of info I needed. It is what I had decided before i posted but it's always nice to have more opinions than just the one in your head!

Thanks again, Stephen

[dtmracing]

One other thing is the gyroscopic effect of the spinning mass...