I have mopar blood in my veins but i did own a 70-1/2 Z28 camaro. It would kill the polyglass tires in 3500 miles, went thru two sets and then put a set T/A radials on (1972)went 57000 miles before they wore out, still had the second set on when i sold the car in 1975 at 105000 miles. they were cheep too $43.00 a tire compared to $54.00 for the polys. these T/As would hook on snot,better than the polys back in the day. the new polys might be a different compound now, haven't bought a set since 71.I have to buy a set of Good Year white walls for my 69 440 cuda so i guess i'll find out soon enough.