[JimT]

I have been reading a lot of posts from others on this sight who feel 150 ft. lbs. is too high a torque for the wheel lugs and are satisfied with only 120. +/-. Well I’m writing this to tell you this is a mistake. I took a lot of time the other day to determine proper seating torque of our alloy wheels (now I’m only speaking to the GT350 owners, can’t attest to CF on a ‘R’). Seating torque of these wheels is around 140-145 ft lbs. If you corner the car hard on 120 ft lbs you risk wheel damage and possible lug damage or break. They will loosen over time. The wheel and tire mass on our cars is large and requires this level of torque. The Engineers thought this through, don’t think you’re smarter

 

[racer172]

Seating torque of these wheels is around 140-145 ft lbs. If you corner the car hard on 120 ft lbs you risk wheel damage and possible lug damage or break.

Where did you get this information? Not disputing it, just would like to know the source of the info.
I think this will be a good thread.

 

[ringmaster]

I have been reading a lot of posts from others on this sight who feel 150 ft. lbs. is too high a torque for the wheel lugs and are satisfied with only 120. +/-. Well I’m writing this to tell you this is a mistake. I took a lot of time the other day to determine proper seating torque of our alloy wheels (now I’m only speaking to the GT350 owners, can’t attest to CF on a ‘R’). Seating torque of these wheels is around 140-145 ft lbs. If you corner the car hard on 120 ft lbs you risk wheel damage and possible lug damage or break. They will loosen over time. The wheel and tire mass on our cars is large and requires this level of torque. The Engineers thought this through, don’t think you’re smarter

The torque spec for my 2015 GT wheels is the same, 150 ft. lbs. I thought that was a lot of torque but I've always set them at that and never had any problems.

 

[JimT]

Where did you get this information? Not disputing it, just would like to know the source of the info.
I think this will be a good thread.

Well, one reason is that I’m one of those Automotive Engineers. Spent 40 years in the business. (been there, done that...).