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Sign up with GoogleTightening Wheel Bolts With Torque Wrench. Which fitment centre does it?
- Thread starter adamr
- Start date
thedutchman
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hiQ ?
F
Fudzy
Guest
The question I'd rather be asking is whether or not your service dealer could void your service plan / warranty by finding out you haven't.
adamr
Executive Member
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- Nov 20, 2005
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LOL imagine if they did ... rear tyres were changed but they did not use a torque wrench ... only saw that in the manual after ...
HapticSimian
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It's a safety concern more than anything else. Too tight & you risk weakening the metal of the wheel studs which could lead to them shearing off. Not tight enough & they can work themselves loose over time.
It's one of the reasons that BMW is pushing run-flat tyres...
It's one of the reasons that BMW is pushing run-flat tyres...
F
Fudzy
Guest
Huh? How do run-flats attach to the hub?
HapticSimian
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How they attach isn't the issue... they bolt on like any other wheel. The thinking is (at least in 1st world countries) that people with run-flats won't ever have wheels changed/replaced anywhere except at a dealer/tyre fitment center. By implication the bolts will more often than not be correctly torqued by someone 'qualified' to do so.
Thus, no incorrectly self-fitted spare tyres to worry about...
F
Fudzy
Guest
Yeah but failure from over/under tightening would have nothing to do with whether or not you have run-flats or conventional tires.
HapticSimian
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No, but run-flats are fitted when the car is assembled and thus correctly torqued. If and when something happens to a tyre, first port of call would be a qualified dealer/fitment center and NOT your Aunt Mildred fitting her spare on the shoulder of the N12
And how will they ever prove that you didnt ?
Are you saying normal tyres are not correctly torqued when the car is assembled?
After you fit your normal spare, a lot of peoples first first port of call is a dealer or fitment centre.
And who says just because you getting another run flat, your dealer/fitment centre is qualified and will use a torque wrench to attach the wheel? Guys take short cuts everywhere.
You make no sense dude.
xrapidx
Honorary Master
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- Feb 16, 2007
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got a thread on this somewhere, decent ones are R3000+
Probably not - my S2000 service manual has a torque number for just about everything that screws in...
HapticSimian
Honorary Master
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Regardless of all this, the run-flat story is an aside to why it's important to have the nuts correctly torqued in the first place.
adamr
Executive Member
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- Nov 20, 2005
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went to HiQ ... they could not jack the car up on their machine ... the arms could not fit under the car, because of it being so low 
... eventually they manually jacked up each front end and they had an on car wheel balancing tool (glad i found that one, best balancing ever, no need to take the wheel out) so they balanced the wheels for high speed and the owner organised a friend from his engineering firm to tighten my bolts to 130nm (Pros of driving an exotic ) ... the car after balancing is so much more responsive in terms of steering feel and also psychologically its driving better than ever before (no shudder thank god at 120km/h)
... eventually they manually jacked up each front end and they had an on car wheel balancing tool (glad i found that one, best balancing ever, no need to take the wheel out
) so they balanced the wheels for high speed and the owner organised a friend from his engineering firm to tighten my bolts to 130nm (Pros of driving an exotic ) ... the car after balancing is so much more responsive in terms of steering feel and also psychologically its driving better than ever before (no shudder thank god at 120km/h)