Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Abiton on 08 September 2007, 16:00:14

Title: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 16:00:14
Ladies and Gentlemen, your assistance please.

My gf parked with the steering hard to starboard, enabling a good view of the inside edge of the offside front tyre.  The car was reshod only about 5000 miles ago (at a guess), but the inside edge of this tyre is dramatically worn down  :'(.  The NSF has slightly more wear on the inner edge than the outer, but far, far less.  There's still loads of tread across the outer 75% of the OSF tyre.

I'm a total ignoramus when it comes to matters suspension/tracking/alignment/camber etc but something must be broken, right?

Edit: It's a '96 manual saloon, if that makes any odds.
Title: Re: Tyre wear, OSF inner edge
Post by: road_rescue on 08 September 2007, 16:02:45
sounds like wishbones to me- mine did the same- get them changed then get it tracked up or it will continue to eat tyres.

good test is try and rock the tyre top to bottom- excessive play/clunking good giveaway
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 16:05:13
Wow, fast response, thanks!

I'm guessing that test is only going to work with the wheel off the ground? (Told you I was daft).
Title: Re: Tyre wear, OSF inner edge
Post by: Golfbuddy on 08 September 2007, 16:06:48
This is, apparently, a common problem. I had the same and my tyre place told me to get the geometry checked out.

This started to happen after the local idiots, not Vx, had changed the wishbones. Got the geometry sorted and the problem seems better although I do get a pull to the left so another visit in on the cards to get it adjusted again.

There is a place called Wheels In Motion who are, I believe, near Hemel Hempstead so not too far from you and they are reported to be very good. He also gives a discount to OOF members.  :y
Title: Re: Tyre wear, OSF inner edge
Post by: road_rescue on 08 September 2007, 16:07:26
if its realy bad, you will notice it on the ground- the other test (i'm told) is bounce on the corner as if you were testing the shocks- again clunking bad.
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 16:09:05
Thanks folks, I'll go have a play.

Edit: Well, with wheel on the deck, no obvious play in that plane, or clunking.  Bouncing that corner doesn't make any untoward noises either.  But... I have thought for a while that the car makes some nasty clunking noises from the front when hitting speed bumps, and under abrupt braking at slow speed. Does that tie in?
Title: Re: Tyre wear, OSF inner edge
Post by: ffcgary1 on 08 September 2007, 16:18:57
Hi mate , the problem is incorrect camber on the front susp leg. the settings from vx are to say the least wrong. It could be the wishbone bushes but unlikely, As said in earlier post wheels in motion in hemel hempstead is the place to go, and talk to a man called tony, they will check your set up and if needs be will correct it. :y

Regards Gary.
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 16:22:06
Thanks one and all, sounds like a little trip to Hemel Hempstead's in order, your suggestions and information have been much appreciated.

 :)
Title: Re: Tyre wear, OSF inner edge
Post by: VX1 on 08 September 2007, 16:43:40
Quote
Hi mate , the problem is incorrect camber on the front susp leg. the settings from vx are to say the least wrong. It could be the wishbone bushes but unlikely, As said in earlier post wheels in motion in hemel hempstead is the place to go, and talk to a man called tony, they will check your set up and if needs be will correct it. :y

Regards Gary.

If you are getting both tyres wearing on the inside AND getting clunking noise when going over speed humps or pot holes then THIS is the font lower wishbones. If you replace these AND the drop link bars at the same time you will notice that the clunking noise will go. As said earlier you do need to get the camber checked and readjusted if needed. There is a HOW TO on here on how to do the lower wishbones.

Cheers Paul
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 17:08:53
Thanks Paul, just had a look at the HOW TO, that is well beyond my mechanical abilities  :-[. Also had a look at www.wheels-inmotion.co.uk - there's a lot of technical info on there  :y.  Isn't t'internet marvellous?

I think I'll contact them and ask them to diagnose/fix/set-up, hopefully not big bucks.
Title: Re: Tyre wear, OSF inner edge
Post by: TheBoy on 08 September 2007, 20:06:20
Its camber!

inside shoulder wear is incorrect camber.  The manufacturers spec is too wide, which doesn't help the problem, neither do most alignment centres incorrect assumption that camber is not adjustable.
Title: Re: Tyre wear, OSF inner edge
Post by: hol666 on 08 September 2007, 20:35:34
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Title: Re: Tyre wear, OSF inner edge
Post by: TheBoy on 08 September 2007, 20:41:23
Quote
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Absolutely correct - the shoulder wear is incorrect camber. Granted, it may be wishbone/strut etc, but the fact is, its due to incorrect camber. If you have no worn components, get a decent geometry done (not tracking/4 wheel alignment)
Title: Re: Tyre wear, OSF inner edge
Post by: hol666 on 08 September 2007, 20:59:04
Quote
Quote
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Absolutely correct - the shoulder wear is incorrect camber. Granted, it may be wishbone/strut etc, but the fact is, its due to incorrect camber. If you have no worn components, get a decent geometry done (not tracking/4 wheel alignment)

I did at Bathwick Tyres in Devizes, £55 too and yes, their computer setup checked everything.  :y
Title: Re: Tyre wear, OSF inner edge
Post by: TheBoy on 08 September 2007, 21:03:09
Quote
Quote
Quote
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Absolutely correct - the shoulder wear is incorrect camber. Granted, it may be wishbone/strut etc, but the fact is, its due to incorrect camber. If you have no worn components, get a decent geometry done (not tracking/4 wheel alignment)

I did at Bathwick Tyres in Devizes, £55 too and yes, their computer setup checked everything.  :y
Did you get the printout, if so, what did they set camber to?  Vx's spec is too wide, and hence can be within spec (statically, but drops out dynamically).  Mine, set up by wheels-inmotion are towards on end of the scale, as that is what we have found to be best.
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 21:03:37
 :) FYI the nearside track rod end was changed earlier this year after a LH cornering noise developed. My girlfriend asked me earlier if it might be trouble with the other one... ;D

I reckon I could have all of the above problems  ::). Don't think this car got much love in it's earlier life!  Clunking noises would point to wishbone bush troubles I guess (anything else?), camber change could be track-rod (cheers hol666), what else could change the camber setting? I'm fairly sure this degree of this wear problem is only recent.  :-/

Title: Re: Tyre wear, OSF inner edge
Post by: TheBoy on 08 September 2007, 21:06:38
Quote
:) FYI the nearside track rod end was changed earlier this year after a LH cornering noise developed. My girlfriend asked me earlier if it might be trouble with the other one... ;D

I reckon I could have all of the above problems  ::). Don't think this car got much love in it's earlier life!  Clunking noises would point to wishbone bush troubles I guess (anything else?), camber change could be track-rod (cheers hol666), what else could change the camber setting? I'm fairly sure this degree of this wear problem is only recent.  :-/

no, camber would not be adversely affected by track rod.
Title: Re: Tyre wear, OSF inner edge
Post by: Abiton on 08 September 2007, 21:09:26
Ah.  Learning all the time here, thanks folks.
Title: Re: Tyre wear, OSF inner edge
Post by: hol666 on 08 September 2007, 21:09:59
 :-? sadly, no printout but I'll see if I can find out, going that way at the end of the month.

Abiton, no problem mate, we're all here to help!  :y
Title: Re: Tyre wear, OSF inner edge
Post by: VX1 on 08 September 2007, 21:48:58
Quote
Quote
Quote
Quote
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Absolutely correct - the shoulder wear is incorrect camber. Granted, it may be wishbone/strut etc, but the fact is, its due to incorrect camber. If you have no worn components, get a decent geometry done (not tracking/4 wheel alignment)

I did at Bathwick Tyres in Devizes, £55 too and yes, their computer setup checked everything.  :y
Did you get the printout, if so, what did they set camber to?  Vx's spec is too wide, and hence can be within spec (statically, but drops out dynamically).  Mine, set up by wheels-inmotion are towards on end of the scale, as that is what we have found to be best.
[/highlight]

As a matter of interest TB, how much do wheels-in motion charge for the geometry setup? if you don't mind me asking? All the above problems with the tyres wearing on the inside IS going to be caused by all the factor's that are ocurring. Geometry out needs resetting, wishbones clunking also causes uneven tyre wear, also worn track rod ends, causes wheels out if inlinement which causes uneven tyre wear the same with both/one side front shock's as well. All these worn parts contribute to uneven tyre wear, most likely causes, as others have mentioned, are Camber, wishbones.
Title: Re: Tyre wear, OSF inner edge
Post by: TheBoy on 08 September 2007, 21:53:04
Quote
Quote
Quote
Quote
Quote
Having had one of my front tyres go the same way, it might not be the wishbones!  Sorry to disagree, but on mine the steering track rod was shot!
Might be worth looking at that too, jack up front wheel and rock the wheel horizontally, if  you get movement replace the track rod.  Might be worth replacing both sides if you have a 96 model, mine is a 95 and mine needed doing. :-/
Absolutely correct - the shoulder wear is incorrect camber. Granted, it may be wishbone/strut etc, but the fact is, its due to incorrect camber. If you have no worn components, get a decent geometry done (not tracking/4 wheel alignment)

I did at Bathwick Tyres in Devizes, £55 too and yes, their computer setup checked everything.  :y
Did you get the printout, if so, what did they set camber to?  Vx's spec is too wide, and hence can be within spec (statically, but drops out dynamically).  Mine, set up by wheels-inmotion are towards on end of the scale, as that is what we have found to be best.
[/highlight]

As a matter of interest TB, how much do wheels-in motion charge for the geometry setup? if you don't mind me asking?
If you mention Omega Owners, it is capped to 1hr.  You'd need to PM wheels-inmotion (a user here) for the exact (maximum) price.
Title: Re: Tyre wear, OSF inner edge
Post by: hotel21 on 08 September 2007, 21:57:32
Paid £85 plus VAT last monday for a setup on mine.

Bill was £295 including VAT for full geo setup, 2 new 235/45/17 F1's and a juggle of 4 assorted tyres onto new rims including balancing, fitting, disposal of 2 x scrap tyres etc.  I was happy with that, to be fair.......