On my 01 Z28 stock 16" wheels I have Sumitomo Srixon 4 P245/50 R16 95H tires. Would it be a good idea for the non-winter months to put Nitto NT555R P245/50 R16 96V tires on the rear with the sumitomos on the front? Would it cause a problem when I switch back to all sumitomos for the winter?

 

I would assume it would be ok. I run Gs-D3's int he fronts and nittos in the rear full-time (245/50r16 also), but I don't have to switch tires in the winter (gotta love FL).