Why? Tires are too fat and grippy. Tires will continue to be too fat and grippy because God forbid your car lose the hothatchapalooza VS hypercar bonanza shootout. It’s a well known that tires are the cheapest and easiest way to add grip/speed, for OEM’s and individuals. Look at the two best examples running counter to the general theory of grip and power uber alles, the Toyobaru and the Alfa 4c. “Well, they’re not as fast as other cars in their class.” Boom. Instead of fine tuning the chassis to a razor edge, people just demand ‘speed’.