Originally Posted by epiphone3
switching to non-runflats significantly reduces the weight of the wheel-tire combination.
I'll begin with your first claim: How much is a significant weight reduction? Then, how much is exactly the weight reduction in a tire that is exactly the same, except being non run-flat instead of run-flat? Take for example potenza RE050A vs RE050A RFT 225/40-18 (typical tire in a Bmw from factory).