I've got 225/60/15's on 15x7" cop wheels as well .. but I also have Yukon LBP axles, which apparently move the wheel out by 1/4" too.. I had to do some trimming on my rear wheelwell opening trim to prevent rubbing.. but if you have stock axles, you have 1/4" more room than me.. so you'd probably be able to fit those tires.