R55 Clubman Lug Nut Torque?

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#26

08-30-2013, 10:37 AM

danjreed

6th Gear

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Quote:

Originally Posted by Black Thirteen

All torque wrenches, from Snap-On to H.F., are meant to be regularly calibrated. The premium price of Snap-On also includes the tool-truck guy calibrating your torque-wrench for you when he comes to visit your shop. This convenience factor is included it the price. (Calibration equipment is expensive)

110% agree.. and that's my suspect point about HF units.. they may look the same/feel the same but I can't believe they every hold calibration long. (sure, for the first bolt, it could be 4%... second 8%.... third... 16%... etc..)

FWIW, the latest digital Snap-on units that go to Boeing (aircraft).. "self lock out" at 60 days to force a recalibration that is then verified and reset by Snap-On.

As a side note... when torquing wheels.... I do a "star pattern"...

30 ft/lbs, 60ft/lbs, 90 ft/lbs...

That's never let me down.. nor have I damaged components...

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#27

08-30-2013, 03:37 PM

yesti

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Quote:

Originally Posted by danjreed

As a side note... when torquing wheels.... I do a "star pattern"...

30 ft/lbs, 60ft/lbs, 90 ft/lbs...

That's never let me down.. nor have I damaged components...

I agree totally, if you fully tighten the first nut/bolt/screw you probably aren't aligned properly with the rest of the holes anyway.

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#28

04-13-2014, 03:57 AM

neonsteve

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Quote:

Originally Posted by yesti

After 5,000 miles the lug bolts (first time i've had bolts, not nuts) on my '12 loosened to about 80 lbs. when i torqued them back to 103 it felt like they were gonna snap. BUT if they loosen that much between rotations i'd say its better to put them to mini spec.

Same thing happened to me when I did a stud conversion on my Mini. It's just the studs stretching. Check them again in a while, but they probably won't loosen again. Mine didn't. I have the TSW M14x1.25 to M12x15 stud conversion from Way Motor Works.

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