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Why do my drivers side front wheel studs keep breaking off while driving?

(1990 Ford Taurus)
in Oregon City, OR on February 27, 2014
My car is actually a 1988 model. I have had trouble with my front drivers side wheel studs breaking off repeatedly in the last couple years. This happens while driving and the last 2 times while I was in parking lots turning slowly- causing me to break 4 of the 5 studs each on the last 2 occurrences. I have less than 150 miles between the last stud replacements and did have them replaced with new factory recommended parts. This only happens on the one front side. Today upon diving to the local market just over a mile away I had to slow way down and was concerned due to the vibrations and noises. Upon checking the wheel when arriving home I discovered one of the newly installed studs had broken off and the one directly across from it was only finger tight. What can be causing this????
Displaying 2 answers & 2 comments
Popular Answer
on February 28, 2014
Take your car to a professional mechanic and get it fixed before somebody gets hurt, or worse!! Be the best and cheapest thing you can do!! I'm sorry but sometimes trying to save money can cost a hell of a lot!!!
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of G. T. Service Center on February 27, 2014
Do you have after market wheels or stock wheels.
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on February 27, 2014
About a year ago I put aftermarket aluminum wheels on. That was around the same time when I broke off 3 of the 5 studs while going around a sharp corner. My boyfriend replaced them with the only thing we had at the time (only running vehicle)- reused from my Thunderbird. I kept the aftermarket wheels on until about a month ago when I had my second incident while a parking lot- and broke 4 of the 5 studs at once. Luckily I was not on the road- I even had one of my sons with me. When replacing that last group we wondered how we could have missed- or maybe it just occurred over a short period-the inside of the wheel being bored out causing a sloppy fit. So we then returned to Ford stock steel wheels. I put less than 100 miles on it all the while noticing a vibration/shimmy when cornering that continued to get worse the more it was driven. It was pinpointed to the drivers front. I thought maybe the wheel on that side was slightly bent then so I asked my boyfriend to switch sides with the wheels. The vibration that seemed to almost always be there had subsided along with the humming noise in the front end when we had a nice used set of tires placed on those first aluminum wheels after my first loss of 4 of the 5 studs. After we had those tires moved on the factory steel wheels the noise was slightly noticeable again. Then after my idea to switch sides with the wheels to help pinpoint the problem the noise was noticeably loader with each drive. Tonight we drove to the local store just a mile and a half away and I didn't want to go over 40 mph. The vibration was terrible, there was a popping of some sort in the front drivers side wheel area at low speeds (5 mph?), creaking and groaning along with the humming in the front end. I know I need to replace my front and rear shocks/struts soon since they are original and I have about 138,000 miles on it now. I am only the second owner- the first being my Grandparents. I have also gone through about 4 wheel bearings in the front end in the last 2 years.

Any ideas or suggestions? I don't have very much money to invest but have "mechanic-y" friends who are pretty good that can help.
of G. T. Service Center on February 28, 2014
Really the front end needs to checked. The aluminum wheels are usually thicker at the studs and the style of nuts are important, but the vibration and noises bother me. If the bearing or bushings are bad it could allow the tire or wheel dip under causing the pressure at the studs to increase to a point the manufacturer has not designed.
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