I run Nitto 555R 275/60-15's. They work very well on the street, but they only work well between a somewhat narrow temperature range. Too hot gets them greasy feeling, too cool and they spin almost as bad as a Radial T/A. They are also speed rated to 186 MPH.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)