Lug Torque

[kevg73]

My winter wheels and tires should be arriving in a couple days. I noticed the owners manual says wheel not torque should be 150 ft-lbs, which seems quite high. This torque should not change with different wheels right? My torque wrench maxes out at 150 ft-lbs, will that be an issue?

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[draco24433]

I would guess at 90lbs

 

[foghat]

That does seem high. Wife's edge is 100. My 135i was about 85.

 

[kevg73]

I would guess at 90lbs

For the new wheels? Where are you getting this?

 

[Melekith]

So about 3 weeks ago I put my summer wheels on. I have separate lugs for these wheels. I removed the stock lugs and 18's and put on my summer 19's with aftermarket lugs (spline drive lug nuts from LMR). I did not realize that the manual says to torque them to 150ft-lb...as others have said that seems excessive! I insteaded torqued them all to 90ft-lb which is what I've done with every vehicle I've ever owned and never had an issue...

Well today on my way home from work I noticed a slight clunking sound from my front passenger wheel area. When I got home...I was missing two of my lug nuts...!

So first thing I did was check the other 18 still on the car...they were all snug and still torqued to 90ft-lb. So...weird.

I'll be calling LMR restoration tomorrow to see about getting some extra lug nuts...hopefully they'll work with me even if I have to buy just two of them to replace.

But yeah...150ft-lb still seems damn high, but I guess there is a reason. Unless I just had two defective lugs and/or studs?

 

[boardkat]

But yeah...150ft-lb still seems damn high, but I guess there is a reason. Unless I just had two defective lugs and/or studs?

the difference in torque required when going from 1/2 to M14 studs is the answer. the manual isn't wrong ;)

 

[H1 GT]

Wow, this is insane. Listen to the manual. 150ft/lbs really isnt that much. The H1 only calls for 100 and I've had others that call for 150.

Besides, its better to tear out a stud from "overtorquing" than to lose a wheel from undertorquing.

I hadn't seen this (resurrected) thread but there have been 2 others. Follow the manual.

 

[JohnDoe]

I got a 150lb torque wrench just for this. Even after using an impact gun, I still had a good 1/5 of a turn left to 150lbs.

 

[Strokerswild]

My '04 F150 had the same lug stud size as the new Mustang, was 150 foot pounds as well.

Manual says 150, so be it.

 

[foghat]

Just switched over to my summers today. Put them to 150. Maxed out my torque wrench, but no problems.

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