i've gone through the last few, so not a lot but enough so that I want to try a diff type. My ends aren't loose though-- i keep them at 75 ft-lbs. my TREs are over. But yeah, like you, i've never had a problem until I've had the over TREs on this axle.plug ugly said:This is funny you bring this up. I have never had issues with boots till I did the over the knuckle swap with the one ton chevy TRE's. i think it was because my TRE came loose that the boot got eaten up, but maybe not. what is your deal with the boots? have you been going thru a lot of them, or just the last few? What TRE's are you using? over or under?