hoffmandirt
New member
I was just outside rotating my tires on my 2010 4runner and one of the wheel lug studs broke at 90 ft lbs. Is 90 ft lbs to much for these? 90 ft lbs is what I use on my other vehicles. The 4runner just hit 5,000 miles.
wheel lug stud broke at 90 ft lbs on 2010 4runner
- Thread starter hoffmandirt
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SeattleMike
New member
83 ft/lb per the manual, page 621.
Ryan_S
New member
I broke one of mine too. It appears that it's pretty commn on toyotas. I was freaking out at first but I guess it's not a big deal, and I need to learn how to do it myself.
Check thenut on the stud you broke. The one I broke had some fubar threads about half way down. The nut bottomed out, that's why it broke.
Check thenut on the stud you broke. The one I broke had some fubar threads about half way down. The nut bottomed out, that's why it broke.
hoffmandirt
New member
Thanks, I'll have to take a look at the lug nut. It never got "tight", but felt like the threads stripped. Next thing you know the lug nut was laying in the driveway with the lug stud. I'm glad to hear other people have broke some too. I have never broken one before at 90 ft lbs, however I will make sure to torque them at 83 next time.
nashman69g
Member
even at 90ftlbs they shouldn't break. Someone beforehand has way over tightened them. Most likely they used an impact.
Ryan_S
New member
hoffmandirt
New member
The only time it was in the shop was for undercoating after I bought it. Hopefully the Toyota mechanics aren't over tightening them. I'm assuming that since the rest of the lug nuts torqued down without breaking that they are OK.
nashman69g
Member
I've seen them use impacts before. Not trying to point fingers but it wouldn't surprise me if they just blipped them on without actually using a torque wrench. I actually am surprised to see wheel lugs being torqued with a wrench. If the others are torqued it should be ok. I would replace the broken one though.
T4Fun
Banned
scares me to death to have ANY tire store touch my brand new 4runner when i get it. I will be taking off the rims 2 at a time and taking them in to swap out the tires myself, thats how paranoid i am. They hire just about any guy capable of holding a wrench to do these jobs i feel, so no offense to any mechanics here, but this has been my experience.
They can be "installed" with an impact gun if you are careful. They should not be "tightened/torqued" with an impact gun. A torque wrench should be used to do final torquing. Unfortunately, some idiots think that a torque setting is a minimum or are just to lazy to use a torque wrench.
By the way, I just had new tires done and the tire place said a stud broke off when they were taking the lug nuts off. Sure enough, I could tell by the way it broke that it occurred when removing the lug nut. I could not find any evidence that the threads were screwed up. The dealership had already worked on the vehicle requiring removing the front wheels. I suspect the dealership overtightened when re-installing the wheels, but I can't prove it. In any case, the dealership replaced stud under warranty. Makes me wonder if I have other studs "stretched out" though.
By the way, I just had new tires done and the tire place said a stud broke off when they were taking the lug nuts off. Sure enough, I could tell by the way it broke that it occurred when removing the lug nut. I could not find any evidence that the threads were screwed up. The dealership had already worked on the vehicle requiring removing the front wheels. I suspect the dealership overtightened when re-installing the wheels, but I can't prove it. In any case, the dealership replaced stud under warranty. Makes me wonder if I have other studs "stretched out" though.
nashman69g
Member
Most impact guns don't have a low enough torque setting on them. Also, the torque settings are not accurate enough either. Most guys at the shops I see just have them set at max and blip them on with out regard to proper torque.
You're kidding, right? Impact wrench is great for getting lug nuts off - particularly when the last jackass installed them with an impact wrench - but you should absolutely be tightening them by hand with a torque wrench. If you've got an air gun with a low enough setting to get them in there below the specific torque setting go for it. As has been noted this typically isn't the case.
Besides potentially breaking the stud as in this case, using an impact wrench to tighten lug nuts leads to tires that can't be changed on the side of the road because they're on there too MF'ing tight.
philsey
New member
Very interesting post. I intend having my dealer do my tire rotation as they'll do it for $6.00 for all four (yep!) with the oil change.
But it's great to be forewarned, as I'll certainly be asking how they install the lug nuts. Ounce of prevention, and all that ...
I'd never have imagined that a truck of this caliber would have weak lug nuts.
One has to wonder how many other 5Gs are running around with them weaked or broken?
Is this a 5G-only issue?
But it's great to be forewarned, as I'll certainly be asking how they install the lug nuts. Ounce of prevention, and all that ...
I'd never have imagined that a truck of this caliber would have weak lug nuts.
One has to wonder how many other 5Gs are running around with them weaked or broken?
Is this a 5G-only issue?
nashman69g
Member
It's good to be prepared...I wouldn't say that they're weak yet. I'm just thinking that some of these wheel installers are using 1000ftlbs to tighten them. I'd be curious to know the bolt strength.
hoffmandirt
New member
I finished putting on my new lug stud and as luck would have it, another one is not getting tight on that same wheel at 80 ft lbs. I stopped tightening it to avoid breaking it right now because I have to go on travel. Every lug nut on this thing tightened up just fine at 80 ft lbs except for the two on the front drivers side. I'd like to say these are junk (they look cheap), but I'm guessing Toyota over tightened them. Who knows. All I can say is that I don't want to have to hold my breath every time I go to tighten lug nuts, so I'm going to look for a stronger replacement. FYI, they are $3.50 a piece from Toyota.
John4RunnerTE
New member
Discount Tire broke a lug off front drivers side today, they stated they were using 80-85 ft lbs torque. They gave me a paper to have it replaced for free of course at a shop down the street.
Ryan_S
New member
Well I am relieved that I'm not the only one that keeps having this problem.
So far I've had three broken, all by me unfortunately. Each time its when I check the torque he day after the wheels were taken off.
The service manager opened a case with Toyota so I'll keep updating with the status.
I have a feeling I is pretty common, since they have warranted all three of them with little or no pressure from me.
On a semi related note, I'm having a he'll of a time keeping my tires in balance. I had them re balanced (road force) and I think they let a bunch of air out of the tires before they balanced them. When i put them back up to 44 they shake like crazy between 55 and 70.
So far I've had three broken, all by me unfortunately. Each time its when I check the torque he day after the wheels were taken off.
The service manager opened a case with Toyota so I'll keep updating with the status.
I have a feeling I is pretty common, since they have warranted all three of them with little or no pressure from me.
On a semi related note, I'm having a he'll of a time keeping my tires in balance. I had them re balanced (road force) and I think they let a bunch of air out of the tires before they balanced them. When i put them back up to 44 they shake like crazy between 55 and 70.
