I'd buy a torque wrench and make sure all the bolts are set to 125 nm as per the handbook. No need to struggle removing over tightened bolts then !
A few years ago I attended a loose wheel on a van on the side of the A1 that had just had a new tyre fitted an hour before. The driver described the van as suddenly wandering all over the road before pulling over. On arrival I noticed the wheel leaning over and on inspection found three of the bolt heads sheared off and lost somewhere on the road with the remains left in the hub. The last two were bent and ready to snap. The mechanic had told the driver he had tightened the bolts as tight as he could so there was no fear of the wheel coming off ! If the wheel had come off it would have probably bounced over the central reservation and through someone's windscreen !
