I would say about 30% of rotors people bring in are turntable. If you can see they went metal to metal 99.9% aren't turntable, but I take out a mic and check them. Also, about 98% of drums are turntable.
-2001 Tahoe original 5.3 4x4 only 430k
-A Metric Butt ton of three wheelers
-1985 V65 Magna
-1983 Nighthawk 650
-1969 F250 Highboy built 360