I'm currently running Pirelli P7000 Supersport 235/40/ZR18 in the rear and Toyo Proxes FZ4 215/35/ZR18 in the front. I have an extra Potenza SO-2 225/40/ZR18 and am thinking about getting another one to replace the Toyos in the front. But I want your feedback before I make an unwise decision. Thanks.

 

u should have 245 in the rear I have 18s and I have 225/40 in front and 255/35 in rear you seem to have an odd set the stock tires that came in the rear S02 form 225/50 are equivalant to 245 sizes look at the posts that are here the S02 that came with the car are wide so if I were you 245 or 255 in rear and 215 or 225 in front

 

Hehe, I know. But I am just questioning if these two types of tires are compatible in the configuration above.

 

for the most part, mixing tire brands is not advisable....

 

You would be running an all season tire in the rear and a performance tire in the front. I would not recommend it.

Jim