Welcome to BigCarClub!

Not logged in!

Hey there, welcome to BigCarClub!
You don't need to be logged in to view the forum but the experience will be so much better if you are! Users can login or if you don't have an account already, you can create one for free by clicking the Register link in the top right corner of this page.

Advert:

Torque settings for wheels

Started by SirDavidAlhambra, December 29, 2021, 06:03:08 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

Hi guys, my local tyre fitter makes a really big show out of using their torque wrench after they've already put the wheels on using an impact driver and obviously it clicks because the wheels are already put on way tighter than the torque wrench settings.

In any event, they don't adjust the torque wrench to meet the spec of the car.

Which got me thinking, how important is it to do up the wheel nuts to the correct torque setting as opposed to letting the tyre fitters just do them up using the impact driver?

Thank you.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

The big show is to prove they have tightened all 4 or 5 nuts and they aren't going to fall off when you drive away (sadly used to be quite common, *think* its less these days).

Over tightening them can cause a number of issues including warping the brake disc, distorting the wheel and damaging the hub. In extreme cases they could even shear off and let the wheel come loose, realistically they would have to be stupidly tight for that to happen across the whole set.

Nevertheless though, the Mk2 is 170Nm per nut and most air impact wrenches put out between 200 and 400Nm so they could be quite a bit over - if you have your own, then set it at 170 and try and tighten them up, then move up in 20Nm settings until it starts to move, that'll tell you what they did them up to.
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
13 Porsche Cayenne 3.0 V6 Diesel in Umber Metallic
262Bhp AWD and Factory fresh...for now!
58 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)
LAUNCH X431 Pad PRO - Scanning & Coding for all makes and models done in Wiltshire in exchange for winegums! :)

Thank you, yes, many words of experience and wisdom here - thank you. I had heard that the Alhamb was 170Nm and I think most motor cars are about 100-120Nm so I suspect their torque wrench is set at way too low a setting. Not that it makes any difference of course if the impact driver has already done them up to 400Nm anyways.

I think the next time I have a tyre fitted I will specify that they need to be done up to 170Nm and will show them how to do it. No doubt they will try and do it up with an impact driver which will be far too tight, then they will put their torque wrench on it which will click straight away and they will claim it's then done tight enough. However that will be too tight so I will insist they do the nuts up solely with the torque wrench, set to the correct setting, and leave the dam impact driver to one side.

I will also explain to them that the impact driver should only be used for undoing the nuts.

It is surprising how many garages don't understand how to do up a wheel nut properly.

And they also don't understand how to inflate the tyres properly. I have lost track of how many times I've had to argue with the tyre people that 30psi is NOT the correct pressure for my Alhamb. They seem to think that every car should have its tyres at 30psi. It's quite worrying when you think about it, as they're supposed to be the experts on this sort of thing and 30psi is low enough to cause a blowout on the Alhamb.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

You are on a road to nowhere with that mate, the turn over rate for staff is normally quite high plus they pay sod all so they simply don't care.

Tight 'n 30, in 'n out  :P

You are right though, 30psi does seem to be the 'norm' for fitters which, when you think nearly all models come with the correct rating somewhere on the body these days, its damn lazy.
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
13 Porsche Cayenne 3.0 V6 Diesel in Umber Metallic
262Bhp AWD and Factory fresh...for now!
58 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)
LAUNCH X431 Pad PRO - Scanning & Coding for all makes and models done in Wiltshire in exchange for winegums! :)

Quote from: Mirez on December 29, 2021, 09:39:47 PM
You are on a road to nowhere with that mate, the turn over rate for staff is normally quite high plus they pay sod all so they simply don't care.

Tight 'n 30, in 'n out  :P

You are right though, 30psi does seem to be the 'norm' for fitters which, when you think nearly all models come with the correct rating somewhere on the body these days, its damn lazy.
Pay peanuts you get monkeys........ I always redo mine myself after having tyres. Pressures and bolt torque. Just crack off and torque correctly. Although the place I use I have witnessed them actually torquing properly and when I checked after they were indeed correct.

On this subject the work van had a new tyre at a well known tyre outlet at their Park Royal branch yesterday. I saw wheel go back on with 3 Duggar duggars of windy gun and then 2 big pulls on the torque wrench just to be sure they were FT.

Should the chocolate wheel brace be unable to remove them in event of a puncture I will leave it at side of the road and await said well known branches mobile service to come and sort it out.

Most independent garages are ok in my experience.

It's the fast fit chain garages that give the biggest issues....