Wheel Adapters/Lug Nut Torque Specs.
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Joined: Oct 2005
Posts: 99
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From: Bossier City Louisiana
Wheel Adapters/Lug Nut Torque Specs.
Ever since joining the Forum serveral years ago, I've read hundreds of posts concerning wheel adapters, some negative and some positive. Frankly, I've never been a big fan of adapters because I figure there is twice as many wheel lug nuts to worry about, thus twice the potential for problems. However, I have recently had to reconsider the use of adapters on my '73 after coming across a really sweet deal on a set of nice 17" wheels with Perelli tires. I will be using 2" adapters.
Heres is my question! The GM spec manual shows a torque range of 70-90# for vette aluminum wheels. Since I don't want to lose a wheel while cruisin' or showin' out, I would like to use the upper range of 80-90# for both the adapter lug nuts and wheel lug nuts since both are aluminum. Does anyone know how close 90# is to the actual breaking point of a wheel stud?? In years past before I owned a torque wrench, I have overtightened and broken or stretched the theads on wheel studs and don't want to repeat that mistake. Any help out there???
Heres is my question! The GM spec manual shows a torque range of 70-90# for vette aluminum wheels. Since I don't want to lose a wheel while cruisin' or showin' out, I would like to use the upper range of 80-90# for both the adapter lug nuts and wheel lug nuts since both are aluminum. Does anyone know how close 90# is to the actual breaking point of a wheel stud?? In years past before I owned a torque wrench, I have overtightened and broken or stretched the theads on wheel studs and don't want to repeat that mistake. Any help out there???
Burning Brakes
Joined: Oct 2003
Posts: 1,090
Likes: 74
From: New Carlisle IN
I have always torqued mine to 90. Most of the time I don't even torque the adapters. I just hit them with the air impact gun set on a medium setting. When I am at an autocross and put the adapters on there, i will get out a pry bar across two studs and use that to stop the fronts to set the torque at 90. I have the 16" aluminum wheels and again torque them to 90. I know i have gone over 100 sometimes with no problems. I have been running the car since 98 with the 3" adapters.
