I'd go with 245-60-15 front and 275-60-15 rear.. even on the 15x7 rims they fit and work a-ok (ran them on my T/A for many years). Actually, I'm going to buy new 255-60-15 T/As for the front to replace the worn out 245-60-15 T/As.. will give a slight bit more ground clearnace (car is lowered) and a bit more "cushion" via slightly taller side-wall considering my suspension is very stiff.. setup for serious autocrossing and road course events.. have 1.24 torsion bars. Car drives great locally around town and on the highway! (have another set of race rims/tires for competition events.. 16x10 rims, 275-45-16 Hoosiers f/r)