My 06 OR auto has a lot of rotational driveshaft play which appears to be "ring and pinion play". Because of that I get a pretty good "clunk" when shifting into reverse and also when driving along at 30 mph I'm aware of a mild clunk if I abruptly take my foot on and off the gas pedal. I can also here it clunk twice at 5-15 mph as the transmission is downshifting as I come up to stop sign. If the radio is on I can't here the clunks. I have about 17M miles on the vehicle. I'm reluctant to have the dealer mess with it unless someone thinks its a problem.