I dunno...I haven't even driven the car yet...I've been using an AWD in this heavy snow Vancouver has been having. I'll have to see if that thin amount of rubber that's acting as a "washer" will create a vibration. I have my torque wrench in the car so I can test it while I drive it around town when I can drive it. Obviously 88ft-lbs has not squeezed the rubber coating out. haha.