Yeah, 255/60-15 approx. 27” Freeway cruise speeds here are 65-70 but at 55 I’m at 2500+/- which would be doable except you get run over, or left behind by the boys with od.
i still want to know what was in the 74 charger i followed on the PA turnpike to CA, never did find that car, or at least i don't remember doing it. He cruised 80-85 the entire way across the turnpike to Carlisle.