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Old 12-13-2014, 08:00 PM
cn90 cn90 is offline
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Join Date: Jun 2014
Location: Omaha, NE
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I have some practical use for TTT bolts.

- Oil change: when I tighten the drain bolt: snug ---> turn the 17-mm socket another 30 degrees (such as from 5:30 ---> 6:30 o'clock if you look directly at the bolt). Many years ago, I measured with a torque wrench and this amounts to about 25 ft*lb or so. I have done this 5:30 ---> 6:30 o'clock thingy for 25 years and all drain bolts still look good.

- Changing wheels (snow tires etc.): snug the bolt down, then another 45 degrees, such as from 1 ---> 3 o'clock. This amounts to about 80 ft*lb or so. I may be wrong, you may need to do your own experiment.
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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
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