Yesterday while pulling from a stop and making a left hand turn, right front tire breaks loose coming off rig. Pulled off side of road, collected tire and only found one lug nut with sheared stud in middle of road. No noted driving or handling changes prior except very slight shimmy in steering in gentle turns driving a short distance from ski resort. Tire did damage quarter panel as it broke off but appears to be minimally bent inward. Essentially truck landed on rotor as I pulled off the road, maybe 20 feet or so. Cleaned thing up a bit this morning, all studs sheared essentially the same it appears. No damage noted to hub or other steering components by visual inspection. My question at the moment is, can I remove the hub from the rotor without first removing the drive flange, to replace the studs? Can they come off together?
Right front lug studs sheared off lost tire
- Thread starter Czechmate
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No
Main reason they all shear like this if the lug nuts were loose. Check all your wheels and follow FSM torque.
- Thread starter
- #4
Did and doing exactly that. Thanks.
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- #6
Will do. I won’t be able to open it up until next weekend. Had to have it towed to a cabin property about 4 or 5 miles from incident. On a side note, I did a front axel job last June/July that included new spindles. So curious to see how all looks.
Other thing, use OEM studs. Not sure what was used in your case.
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- #8
Thanks, I’m ordering new OEM tomorrow and will begin to replace all with new OEM.
Who put your wheels on last and what torque were they set to?
If an impact wrench was used you may consider more than just the one corner.
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- #10
No impact wrench. Best memory was set to 76ft lbs with torque wrench.
What wheels and what type of lug nuts do you have?
I only ask because I had this happen after buying wheels from discount tire. The lug nuts discount tire used only engauged about an 1/8th" of threads. Somehow that caused my studs to shear and I lost a tire doing about 60 down a dirt road.
I was lucky and had no injuries and kept the rig on 3 tires. Discount tire was more than happy to pay for all the damages lol
I only ask because I had this happen after buying wheels from discount tire. The lug nuts discount tire used only engauged about an 1/8th" of threads. Somehow that caused my studs to shear and I lost a tire doing about 60 down a dirt road.
I was lucky and had no injuries and kept the rig on 3 tires. Discount tire was more than happy to pay for all the damages lol
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- #12
Yeah, I thought about the what could have been. I was only going about 8-10ish mph starting through a turn. Factory wheels and factory lugs but I will inspect all others to confirm with the new.
What year truck and what wheels? There are two versions of the factory aluminum wheels (three actually) but some take the tapered (acorn style) lug nut at 95 lb-ft and others take the shank style lug nut at 76 lb-ft.
I have both on my truck and have correct lug nuts for the given correct wheel and set the torque differently based on the lug nut style requirements.
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- #16
Factory alloy, lugs are the third style in photo above at 76 ft lb. But I need to confirm all are that style. I know the driver side is as I checked for that.
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- #17
My first thoughts were over torqued but I haven’t messed with that wheel since last summer. Now thinking all had loosened based on above comments.
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- #18
Forgot to say above that truck is a 95.
The 95 trucks have the acorn style (the middle one) and should be at 109 LB-FT unless someone changed your wheels to the other style.
The shank style didn't change until mid-96 production. My 96 (8/95) had the acorn style, not the shank style. PO wrecked it and broke one wheel and installed one from a late 96 that had the shank style and ran the same lug nuts on it for years until I bought it and figured it out.
I had just purchased my first 80, a 96. Did a quick search and found and found 109 ft. lbs. for the lug torque. Yeah, I snapped the first one I torqued. The other ones actually held a 109. It wasn't until a started looking at it after I had snapped the one that I realized it was 76. The frustrating part was that I had JUST finished doing a brake job, new rotors included. I had to take it completely back apart to replace the broken stud.
