185/75R14 any thoughts?

also what are dimensions of gen II 300zx rims, would 275's fit?

Pick another size if you want to do anything remotely resembling performance driving. The 185/70s on my NX2000 really kill its' abilities in the twisties... the car barely rolls, but the tires give way sooo much more quickly than the chassis should...

this is my daily driver, those are oem tires, trust me theres no autox on 185's hahah :) 1990 oldsmobile cutlass ciera sl, great car :) im gonna give it to my bro when i start modding the 300zx after christmas, but i need new rear tires, goodyear regatta II's hold up extremely well in the front, i might get some more of those. other ones im thinkin about are:

michelin symmetry
BF Goodrich Control T/A M65
Yokohama Avid Touring looks really good
Pirelli P400 Touring
and kumho 792 Prima II's

Dude, I had Regatta IIs on the front of my NX, and after a year of serious rubber burning they had probably half the treads left on them... can't complain about that :)

But really, for a car like that, even private label rubber would do...