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How old are your tires? How much tread is left on them? What air pressure do you run?




The tires are at least 3 years old, but dont show any signs of dry rot.

Plenty of tread, not even down to the wear bars.

Ive tried pressures from 18 to 19.5, .5 increments.

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.