rakers

I just installed new rotors on my 2000 F150 7700 5.4l this evening. Like an idiot, I misunderstood the Haynes manual torque specifications for wheel lug nuts.

The Haynes Repair Manual says:

Wheel lug nuts Ft-lbs (unless otherwise noted)
12 mm wheel studs...........100
14 mm wheel studs...........150

My studs are 12mm but I accidentally torqued all of them to close to 150 ft-lbs. I ended up shearing off two studs. Once I realized my mistake I backed off the remaining 12 studs and torqued them to 100 ft-lbs.

Sheared studs aside, have I compromised the rotors by over torquing the lug nuts? Should I replace both rotors? Or should I just replace the two studs and call it a day?

What do ya'll recommend?

Thanks.

JCR 56

I would replace the two studs and call it a day.

Alcoloco

If you sheared off two studs by being over torqued I would replace them all. You may have stressed all the others which may fail in the future.

I personally would do it for peace of mind and I am sure they are not that expensive.

RLXXI

Replace all studs and lugs, you will know if you warped the rotors if you get a high speed vibration either braking or just driving.

rakers

Thank you all for your feedback.

How do I go about replacing the studs? They are integrated into the rotor.

RLXXI

Best let a pro replace them.

Hendo13

didn't you just replace the rotors. So did you noticed that studs were n the wheel hub and the rotors slid over them.

tomb1269

Looking at the pict of your truck it looks to be 2 wheel drive, which means your brake rotor and hub are one piece. The good news is the rotors will be fine, the bad news you will most likely need to take them off and tke them to a shop to have the studs pressed out (new ones should be pressed in but can be do via backyard press, i.e. larger nut slid over stud and the lug turned backwards so the cone points out and the flat side makes contact with the over size nut and then tighten until the studs pull in to place). When you remove the rotor make sure to either cover the hubs very well so as not to contaminate grease and bearings (best bet is to remove bearings clean grease from hub and then do the work, but you will have to replace the rear seals again as reuse is not wise)