I would like to know what size tires would you put on these rims for a Datsun 1200 coupe ? I just bought 4 weld racing rims for my Datsun: 15x3.5 for the front and 15x8 with 5.5 back spacing for the back. They came with tires but when I put the rims on, the front tires were rubbing the fenders ( 165/80 ) front runners and the back tires ( 205/50 ) E/T 's were rubbing against the leaf springs Any suggestions ? My car is still factory.