![]() It's called being a daily driver and not a race car. With go-flats being lighter, in combination with a lighter set of wheels than what is on the car presently, one could keep the go-flat tires as wide as the RFT, keep the lateral adhesion, and also improve the acceleration. In consulting Tire Rack for 18" wheels, one can see a significant range of wheel weight, 19.5 - 31 lbs.! Each 1" increase in diameter results in about 2.5 lbs per wheel more weight, offset by only a small decrease in the weight of the rubber mounted. These folks who are more interested in appearance of 19" than quality of handling puzzle me. ![]() Each 1" increase in diameter results in about 2.5 lbs per wheel more weight, which is slightly offset by only a small decrease in the weight of the lower profile rubber mounted on the larger wheel. I posted in another thread here that every 1" larger diameter wheel results in higher unsprung weight, which hurts acceleration, braking, and handling. So the PSS improved ride, handling, noise, longevity and grip at a lower cost and dropped 26 pounds of unsprung weight! The PSS I currently have weigh 90 pounds.ΔΆ6 pounds difference averages 6.5 pounds/tire. The RFT that came with my car weighed 116 pounds.
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