In short: Better materials and better computational models. https://www.caranddriver.com/features/a15078050/we-drive-the-worlds-most-busted-out-bmw-m3-feature/

In short: Better materials and better computational models. https://www.caranddriver.com/features/a15078050/we-drive-the-worlds-most-busted-out-bmw-m3-feature/ https://www.caranddriver.com/features/a15078050/we-drive-the... > In the last decade, the spiciest street-legal tires have nearly surpassed the performance of a decade-old racing tire, and computer modeling is a big part of the reason (written about 8 years ago)