I'm afraid that these modern low-profile tyres also have to do with the high vehicle weight today. I still have a 1976 911S with tyres that are now standard equipment on everyday cars (if they're not „sporty“
195/65/15. But since the Porsche only weighs just under 1100 kg, it handles very well through every fast curve with these tyres. With a modern Porsche that weighs 1650 kg, it would be hopeless with 65-series tyres. Or my 4/4 with its antique tyre dimensions... just like the original 911 and 912 from the mid-60s. It drives damn sporty because it only weighs 800 kg and therefore its rubberies don't bend too much.
Of course, the high weight is not the only reason for low-profile tyres today. Besides, people are being led to believe that they are super sporty. Many have never experienced how comfortably a 1968 Mercedes sedan drove.
