tire wear i have been told by many people is under 20000 miles then add your spool. i bought my bias ply tsl's thinking that those were going to last the longest. about 30000 miles with the spooled rear. i would have to check psi and rotate frequently to do that though. fortunetly my 83 will not be my dd anymore. i have yet to drive on those tires so i can't verify what i said is true though
