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Author Topic: Tyre Pressure Query  (Read 1863 times)

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star_whites

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Tyre Pressure Query
« on: 06 February 2010, 17:05:36 »
Can anyone tell me the correct tyre pressures are for my Mig.

Its a 3.0 MV6 Estate running on 235/45/Z/R17 Dunlop Sports. Im being told that Im not running them with enough pressure in them. I currently have 32 in the front and 34 in the back.  :-/
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Andy B

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Re: Tyre Pressure Query
« Reply #1 on: 06 February 2010, 17:13:24 »
Quote
Can anyone tell me the correct tyre pressures are for my Mig.

Its a 3.0 MV6 Estate running on 235/45/Z/R17 Dunlop Sports. Im being told that Im not running them with enough pressure in them. I currently have 32 in the front and 34 in the back.  :-/


About right to me!  :y click
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star_whites

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Re: Tyre Pressure Query
« Reply #2 on: 06 February 2010, 17:24:20 »
There telling me they need more as its tearing the outside edge off the front passenger side tyre and theres hardly any wear on the middle. Tracking was done not long ago but its chewing the tyre.
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feeutfo

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Re: Tyre Pressure Query
« Reply #3 on: 06 February 2010, 17:31:28 »
they are talking shite, either camber or toe is out, or miles out by the sound of it. You need full geometric set up which sounds like a million miles from the service your getting, pay them no money and go directy to wheels in motion or similar.
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Andy B

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Re: Tyre Pressure Query
« Reply #4 on: 06 February 2010, 17:32:28 »
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There telling me they need more as its tearing the outside edge off the front passenger side tyre and theres hardly any wear on the middle. Tracking was done not long ago but its chewing the tyre.

low tyre pressure will wear BOTH side of the tyre and leave the middle. If you're getting scrubbed tyres on the outside, then that suggests that the tracking is not correct. You need someone who knows what they're doing on a four wheel alignment. Wheels inmotion have a good name here .... depends where in the country you are & how far you want to travel. http://www.omegaowners.com/forum/YaBB.pl?action=viewprofile;username=3D222F2F263967232427253E2325244A0 and I THINK http://www.wheels-inmotion.co.uk/  :y
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Andy B

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Re: Tyre Pressure Query
« Reply #5 on: 06 February 2010, 17:33:21 »
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they are talking shite, either camber or toe is out, or miles out by the sound of it. You need full geometric set up which sounds like a million miles from the service your getting, pay them no money and go directy to wheels in motion or similar.

I'd have beat you if I'd been as forth right as you!  ;D  ;D  ;D
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feeutfo

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Re: Tyre Pressure Query
« Reply #6 on: 06 February 2010, 17:36:21 »
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Quote
they are talking shite, either camber or toe is out, or miles out by the sound of it. You need full geometric set up which sounds like a million miles from the service your getting, pay them no money and go directy to wheels in motion or similar.
I'd have beat you if I'd been as forth right as you!  ;D  ;D  ;D
i knew you where on line... :P  ;D
« Last Edit: 06 February 2010, 17:38:28 by chrisgixer »
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Andy B

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Re: Tyre Pressure Query
« Reply #7 on: 06 February 2010, 17:42:06 »
Quote
Quote
Quote
they are talking shite, either camber or toe is out, or miles out by the sound of it. You need full geometric set up which sounds like a million miles from the service your getting, pay them no money and go directy to wheels in motion or similar.
I'd have beat you if I'd been as forth right as you!  ;D  ;D  ;D
i knew you where on line... :P  ;D

 ;D  ;D  ;D  ;) :y
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star_whites

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Re: Tyre Pressure Query
« Reply #8 on: 06 February 2010, 22:42:42 »
Have checked it over again, and I think we have found the knocking on the drivers side front to be the suspension shocker top bearing. So gonna replace this then go and get a full set up done at a different dealer  :y
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feeutfo

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Re: Tyre Pressure Query
« Reply #9 on: 07 February 2010, 00:00:52 »
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Have checked it over again, and I think we have found the knocking on the drivers side front to be the suspension shocker top bearing. So gonna replace this then go and get a full set up done at a different dealer  :y

Dealer? please tell me not...?
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Mr Hagon

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Re: Tyre Pressure Query
« Reply #10 on: 07 February 2010, 21:58:43 »
Don't use a Vx dealer, waste of time.  On my previous Omega I had the local dealer (this was pre-OOF days for me!) do their 4-wheel alignment thing a few times and swap tyres around for no avail.  Still made for the kerb every time I let go of the steering wheel!

Only ever got sorted with a new set of tyres, full geometry check and new wishbones at WIM...
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mudflap

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Re: Tyre Pressure Query
« Reply #11 on: 08 February 2010, 07:09:19 »
^ true - steering geometry settings will not allow a tyre with edge wear correct itself, new tyres will have to be fitted at the same time the tracking is done.  :)

if the front tyres are wearing on the outside the tracking is toeing in too much, if the wear is on the inside edges the tracking is toeing out too much.  If I remember correctly 1/16th to  1/8th inch toe-in was acceptable, but must be adjusted with new tyres fitted, and ideally new steering joints will help achieve a good adjustment... 


as for tyre pressures, too low pressure will affect the tyres by wear on the outside edges, put strain on the steering joints and waste petrol,   too high pressure will wear the tyre in the middle and put undue strain on the springs and shock absorbers, as well as affecting handling!
.
« Last Edit: 08 February 2010, 07:19:59 by mudflap »
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robson

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Re: Tyre Pressure Query
« Reply #12 on: 08 February 2010, 10:04:49 »
Why would you need new tyres to do toe in surely this is done on the rims
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mudflap

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Re: Tyre Pressure Query
« Reply #13 on: 08 February 2010, 11:19:24 »
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Why would you need new tyres to do toe in surely this is done on the rims

yes, but adjusting the toe in will not have any benefit on tyres that are already worn on the edges, they will continue to wear that way until new tyres are fitted. :)

.
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Bixy1

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Re: Tyre Pressure Query
« Reply #14 on: 08 February 2010, 18:46:56 »

Hi, Just had a look in my owners manual,
up to 3 people, 30 front 33 rear,
full load, 39 front 45 rear.

Yours sound ok to me.  :y
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