Who's running 15's ?

255/60-15 on 15x8 rims with 4.5" of back spacing. 4" or 4.25" of back spacing would have moved the wheel out some and made a little more for bigger tires. A buddy of mine has 275/60 on cop car wheels on his 67 Barracuda but IMHO that size tire is starting to look out of place on the car.