Made this thread so people can search for and find the answer.

Wheel Lug Nut Torque is 80 Ft/Lbs

Just saw the sticky.......lol......but I'm Search Challenged, so this will help people with a similar affliction.........

Philosophy and Purpose of Life: Faster Horses, yw, ow, and More Money

z

 

always good to recheck torque after 10 miles or so as they can back out at times.

 

Lug nuts do NOT 'back out'.........lmao

Unless you TOTALLY Screw up when mounting the wheel..........and even then I've never heard of it.

You DID notice the taper on the nuts right?

Or is this just a Troll........lol

z

 

Pfft, BULLSHIT!

Lug nuts can actually back out and loosen a little. Even if torqued to spec with a properly calibrated torque wrench and the matching lug nut taper for the wheel used (Ball in seat which is common Honda/Acura, Mag seat, or taper which is common aftermarket).

Mind you... in most situations like the typical daily driver, there will not be a substantial difference between the initial torque and the recheck after driving. I typically see maybe an 1/8 of a rotation on my street car during rechecks, a little more on the Fit (about an 1/8 to almost a 1/4 if driven HARD) which sees a lot of autocross.

General rule of thumb of a street car: Torque to spec (80 bs in our case) during mounting/servicing then recheck after about 25 to 50 miles of driving.

Anything that sees autocross, road course, or sees a lot of spirited driving should be checked before and after each event as well as between sessions/heats.

 

I agree. I autocross all the time. Between tire rotations, flipping the tires or putting my street tires on the wheels are on and off all the time. I always re-torque after 25 miles of driving and before every autocross event. Usually 1-2 lug nuts have loosened up. Mostly on the front wheels. Five minutes to re-torque is cheap insurance against this:

 

pretty convincing. The place that changes my wheels does free retorquing after 25-50. Must be a good reason for them to do that.

 

wow.. darwinism really needs to accelerate its process.. lol

 

I stand corrected. .........z

 

no problem.. it's good to have that knowledge.. especially when running steelies i had to retorque the factory lugs like 6-7 times before they would stay in place at 80lbs/ft.

dealers tend to use upwards 100-110lbs as a precaution of lugs backing out. this is why people end up with broken studs and lugs they can't remove with the factory emergency wrench in the car..

 

So if they loosen up in a hundred miles and you re-torque them, how is the next hundred miles different from the first hundred?

 

sooner or later they will stop backing out. then you don't need to retorque them.

 

Why would that be?

 

The first torquing inevitably leaves some uneven stress at the interface between the wheel at the hub. As the car rolls, forces are applied to the interface and this stress gets redistributed. This subtly moves the wheel relative to the hub and can back out nuts. Assuming the parts are in good shape and made to match each other (and the nuts haven't backed out TOO much), a second torquing tends to hold as there is less redistribution going on.