Date: 24 Aug 2001 17:19:06 -0700 From: b_veritynopsameja.com (Wyatt Burp) Subject: Re: Can Misalignment Cause Shimmy?
"Todd Matsubara" <toddmnopsamhlink.net> wrote in message news:<xSgh7.6007$XY4.621395nopsamread2.prod.itd.earthlink.net>... > Sometimes BMW's can get the rotors warped when an impact wrench is used to > tighten the lugs. This is because they use bolts instead of nuts. You can > change the rotors over and over too, it'll just keep happening if they keep > doing this. At the risk of sounding dumb...what's an impact wrench? It wouldn't surprise me if the rotors turned out to be the problem as BMW rotors are supposedly somewhat "fragile," as brake rotors go. They supposedly have to be changed about every 70k miles or so. > > One other area you might want to check is that the wheels fit on the hubs > properly. Sometimes if the wheels are changed, they won't index on the hubs, > causing vibration at the speeds you mentioned. How would I know that they weren't on properly? How do you index a wheel on a hub? Tire people and techs at dealerships have taken the wheels on and off in the past; do you think they would likely be not putting the wheels back on right? Is this a mistake that such "professionals" would make? Sorry to sound so stupid, but I'm learning new things here. And thanks to everyone who answered. I'll keep all this in mind. -- WB