proper torque for lug nuts
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proper torque for lug nuts
1963B T6 Base car. I am changing tires due to age of the old tires. I have used 75 ft.lbs. torque for the past years. Is this correct?
1963B (T6) Coupe
1987 3.2 Carrera
1985 FJ60 Landcruiser
1993 Miata
1987 3.2 Carrera
1985 FJ60 Landcruiser
1993 Miata
- Doug McDonnell
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Re: proper torque for lug nuts
I think B/C workshop manual says 94 but opinions vary. Al Zim says 70 I think. At the track tech always torqued them to 90. You should be fine at 75. See Al Zims answer here: viewtopic.php?t=12915 where he checked and found 35-40!!
Last edited by Doug McDonnell on Thu Nov 07, 2019 11:35 pm, edited 4 times in total.
1965 356C 2000 BMW 740i Sport 1967 Honda CL77 There is never enough time to do it right, but always enough time to do it over.
- David Jones
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Re: proper torque for lug nuts
Correct torque according to the factory manual is 13 m/kg which is 94 ft/lb.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
- Doug McDonnell
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Re: proper torque for lug nuts
Personally I don't need to change a flat very often anymore but when younger in the 60s it was quite common on the side of the road. Never torqued a lug nut. Never had one come loose. Tempted to tighten like the old days and then check with torque wrench. Bet I am nowhere near 94 ft/lb Now if you are using other than stock rims recommendation may be different. If using Fuchs 80-90
Last edited by Doug McDonnell on Thu Nov 07, 2019 11:30 pm, edited 1 time in total.
1965 356C 2000 BMW 740i Sport 1967 Honda CL77 There is never enough time to do it right, but always enough time to do it over.
- Spencer Harris
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Re: proper torque for lug nuts
From the 1954 Workshop Manual:
We use 95 ft. lbs. when we tech cars for autocross.
We use 95 ft. lbs. when we tech cars for autocross.
Spencer Harris
San Joaquin Valley, CA.
San Joaquin Valley, CA.
- Harlan Halsey
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Re: proper torque for lug nuts
Of course you realize that these torque numbers are meaningless unless the lubrication is also specified. For what it's worth, I have always used Permetex Anti Seize or moly grease on the wheels, moly grease on the threads, and snug them up by feel to about 70 lb.-ft.