Mick, my Hemi RR runs Radial T/A 295s on 8" wheels; it's been 120 with zero issues, but like I alluded to in my earlier reply, the car just blows them off in 1st & 2nd; and that's with only about 540HP/500TQ. I ran M&H DOTs on it once and that improved "forward progress". Could still torch 'em a bit with an aggressive launch on the street.