I am on my last set of CR500s... which are probably now a bit old already.
and ZZRs.. any road utility?
I gather ZZx tyres are heavier. Are the sidewalls also stiffer? I am of course accustomed to my CR500 tyres having been specifically designed for my R500 car, so not enthusiastic about in future having to use what amount to generics. Has 20 years allowed advances relevant for me and my car?