Wheel Nut Torque

Figaro

Figaro

Joined
Feb 22, 2011
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Newcastle under Lyme
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15,397
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Hymer B544 A Class
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Since 2015
Had two new Michelin Agilis tyres fitted today at ATS Euromaster.
Fitter says to me "whats the torque on yer nuts mate" Oh Please! your the bl**dy tyre fitter !!!
How should I know
Told him it was Ducato spec, his computer told him 100, he thought that was not enough so elected for 180 ???
Anyone know what it should be please, he says I can go back and have them torque checked next week.
It`s a 2003 X244 at 3900kg
 
10 seconds to Google. ...

180 Newton meters.

133 ftlb

Screenshot_20180407-201542.png
 

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Was stopped next to a Fiat ambulance at the lights this evening, I looked across and the wheel torque and tyre pressure was inscribed on the front wheel arch, 130nm and 53psi, rear pressure was the same.
 
jockaneezer said:
Was stopped next to a Fiat ambulance at the lights this evening, I looked across and the wheel torque and tyre pressure was inscribed on the front wheel arch, 130nm and 53psi, rear pressure was the same.
Click to expand...
130 would be right but I bet it was marked wrong......130 foot pounds, near enough 180 nm
95 ftlb (130nm) is no where near tight enough.
 
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15" wheels 1 60 Nm. 16" wheels 1 80 Nm. Just for information Sprinters Transits and Renault Master are different torque figures.

D.

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dave newell lvs said:
15" wheels 1 60 Nm. 16" wheels 1 80 Nm. Just for information Sprinters Transits and Renault Master are different torque figures.

D.
Click to expand...

Phew , i'm 2lbs over , with 15" wheel's , i was getting worried there .

Thank's Dave , just as a matter of interest though , what is the difference between foot ibs , and pound's per sq foot ? .

I'm starting to see foot pound's a lot recently , but i've always worked with pound's per sq ft . Even my new torque wrench has foot pound's marked on it , with the result , i've started using nm to get round it .
 
airwave said:
Phew , i'm 2lbs over , with 15" wheel's , i was getting worried there .

Thank's Dave , just as a matter of interest though , what is the difference between foot ibs , and pound's per sq foot ? .

I'm starting to see foot pound's a lot recently , but i've always worked with pound's per sq ft . Even my new torque wrench has foot pound's marked on it , with the result , i've started using nm to get round it .
Click to expand...

Ft lbs is a measure of torque (turning force) pounds per square foot is a measure of pressure just as pound per square inch is (psi). Don't mix the two up.

D.
 
dave newell lvs said:
Ft lbs is a measure of torque (turning force) pounds per square foot is a measure of pressure just as pound per square inch is (psi). Don't mix the two up.

D.
Click to expand...

Jeeze mate , that's what i suspected .

That's why i switched to newton metre's to make sure i was in the clear , both my wrenches have nm , and psf , but my old wrench was getting unreliable at low setting's , it wouldn't click off . I brought a new one for lower value's , but it wasn't till i got it home i noticed it measured foot pound's not psf . It's smaller , so better in smaller spaces , but only three eighths sq drive . The other one is a fair age , half inch sq drive and nigh on 24" long , so better for higher value's .
I still really need to replace it completely for safety , think it's gonna be really soon , as i suspect i have cylinder head problem's on my car , i use them both all the time .

Thank's Dave .
 
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This discussion reminds me of when I needed to replace the head gasket on my boat's diesel in Greece.

I asked an Engineer friend of mine if he knew a good workshop that would come to do it. His reply was 'No, the Greeks will just give it what they think is enough torque without a torque wrench.

He was busy Charter Skippering, but said 'you can do it', because I had the Mercedes workshop manual for the torque settings and order of tightening the head bolts, and he lent me his Draper torque wrench.

I did that job 15+ years ago and the engine has run fine ever since - to my surprise, and satisfaction.

After that I would not be afraid of talking something similar - with the correct info and tools.

Geoff

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Ok, so having took delivery of Obi Van Kenobi yesterday...(get it?..) Sunlight Cliff Adventure 540, I'm in the process of fitting security bolts to my Fiat alloys, and I have a discrepancy on the figures above. My tyres are 225 75 R16 CP, and the bolts are 14mm thread - one post states 180Nm for both the tyre size and wheel, (16 inch, 180Nm,) but another states 160Nm for 14mm thread. Which is correct? Do I go for the higher value, lower value, or split the difference and go for 170Nm??
 
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OK, so job done..... it seems there are more questions than answers on this topic, looking online! In the end, I settled for 160Nm, reasoning that the thread diameter was the limiting factor, and also, should that not prove to be the case (although quite where any definitive answer will come from is anyone's guess...) I could always up the torque to 180Nm, whereas if I went straight to 180Nm, I'm potentially looking at another set of bolts at £40 (I wouldn't be happy simply 'backing off' the torque to 160 from 180 on the same bolts.) Also, if the security bolts come loose, or even fall off(!!) the 4 remaining should still hold the wheel on, so another £40, and 180Nm later, job (re)done!!!
I will recheck the bolts after 50 or so miles and see what I find....
 
WoldsSunlight said:
OK, so job done..... it seems there are more questions than answers on this topic, looking online! In the end, I settled for 160Nm, reasoning that the thread diameter was the limiting factor, and also, should that not prove to be the case (although quite where any definitive answer will come from is anyone's guess...) I could always up the torque to 180Nm, whereas if I went straight to 180Nm, I'm potentially looking at another set of bolts at £40 (I wouldn't be happy simply 'backing off' the torque to 160 from 180 on the same bolts.) Also, if the security bolts come loose, or even fall off(!!) the 4 remaining should still hold the wheel on, so another £40, and 180Nm later, job (re)done!!!
I will recheck the bolts after 50 or so miles and see what I find....
Click to expand...
Did you stay at 160Nm in the end?
 
Figaro said:
Had two new Michelin Agilis tyres fitted today at ATS Euromaster.
Fitter says to me "whats the torque on yer nuts mate" Oh Please! your the bl**dy tyre fitter !!!
How should I know
Told him it was Ducato spec, his computer told him 100, he thought that was not enough so elected for 180 ???
Anyone know what it should be please, he says I can go back and have them torque checked next week.
It`s a 2003 X244 at 3900kg
Click to expand...
118 ft ponds I think that's what I do my ones to.
Bill
 

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