Just for the hell of it, I went out to the garage (torque wrench was in the trunk) and you are correct. Using my highly accurate Computorq 3 torque wrench (digital), it took 84 FT lbs to crack every lugnut loose on the rear right, and the rear left it maxed at 82 ft lbs. I believe this is 113 nm / 111.nm. So the wheels that were torqued to 105NM roughly a year ago needed 113/111 nm to break free. I am unaware if a 7.5% over tightening is cause for concern. If I don't report back in the next year, chances are the lugs snapped on the expressway. :grin2:In other words, even at identical torque wrench settings, a lubed bolt will hold the wheel tighter than a dry bolt, but this over-torquing might also stretch the bolt.
One of the reasons many people don't over-torque their wheels is that they do not want to put so much strain on the bolt that it deforms.
Actually, it appears to be the opposite.Have you noticed if the lug nuts loosened over time due to the grease?