I'm surre some drives thei 911 like VW beetles. In that case, you could do 50.000km on the same tires. Not a problem.

If you buy the car for its looks, then tires can last as long as on a bmw 325i. (they are probably not many people who do that on this forum, but IMO a LOT of P-buyers don't even know what the car can do. They just buy it as a status symbol)