ok, first ioff, it all depends on what 190 tire you want to run, most 190's are made to fit a 6 inch wide rim, the 180's fit a 5inch rim

you can inter-change them but your handling will change dramastically, the 180 is a taller tire therefore will turn in allot better, but the 190 gives a better contact patch

from the looks of it, you had Michelin pilot race tires, right now you wont find a pilot race tire in a 190, they are coming out but I dont think they are here yet

you said you were going to go with Dunlops, if it was going to the the sportmax (aka 209 Gp's) than I would say thats your best move, the 209's are made to fit a 5 inch rim, and I can say that I have run both Michelins and Dunlops (still on Dunlops) and both tires have their advantages, but the 209's are not junk!!!!


best thing to do is be a lil more specific about that tire you have and what you want to use its like talk about a certain brand of cars; chevrolet, on one side you have a cobalt on the other you hav e a vet, both are made by the same company but we all know theres no comparison