Uneven tyre wear.

[waynne]

My Tyres are wearing on the outside any idea why. Its the outside inch of both front tyres which re wearing out.

Generally when tyres wear at one edge quickly it means it is time to sort out the alignment but I've never had inside and outside go like this before.

[trooper]

Waynne you might find this interesting

http://www.kwik-fit.com/changing-tyr...ustrations.asp

It suggests the problem with your tyres could be due to under inflation!

[StevieDB9]

yeah, about to mention the same thing- tyre pressure too low?

[waynne]

So if I over inflate for the next 10,000 miles it might even out

Thanks for the heads up. I thought I kept pressure pretty much on the ball but, having checked them, they are all 8-10psi down! Reverting to weekly tyre pressure checks - could be a bad set of valves or just a couple of slow punctures. Ah well out with the washing up liquid mix on the quest for bubbles.

[Freddie]

Hi Wayne.

I feel your pain! I have exactly the same problem..

I have considered the obvious cuases:
1. Underinflation (I check them quite regularly, and use Citroen guides to pressures)
2. Tracking (wheels were aligned when tyres were fitted)
3. Driving style (I do give the car some stick round corners, but not as much as some, and no real wheelspinning or burnouts)

Heres the evidence..




The inside of thw tyre still has plenty of tread..


I've had a word with the Saxo lads and the general consensus seems to be: camber/castor/tracking.

Hard driving would also do the damage.. BUT

NOT underinflation, as that would wear both shoulders. Do you agree?

They seem to think that even set up very well, this problem will still occur..

Don't know wether to bite the bullet and go to some suspension specialists, keep shelling out for new tyres; or sacrafice grip levels for hard compounds.

[HDi fun]

Let's dismiss Kwik Fit immediately - this bunch even tried to tell me I had to change the cam-belt on a NIssan Primera SE which is chain driven!!

Find a good independent with a true 4 -wheel rig - Hunter make some of the finest. More important is the operators' inclination to to do it correctly.

You have to get the rear straight first otherwise you're just aligning to an imaginary line. This often involves unbolting the rear suspension totally to adjust camber and caster angles (yep, toe is just the start of it!).

After that's done you can the get the front in line with the rear. Result? A car that goes arrow straight mile after mile with hands off the wheel. Even camber follow is reduced.

[steveo]

they are more or less on the limit!!! if yout tyres were under preesure both sides will be bold and to hard the middle on the tread will get bold too! i think you need a tracking looking at that tyre or your camber could be out to.

[Freddie]

They are wayyyyyy farking past the limit, but money seems to go elsewhere as the car seems to stop and handle fine, even in the wet. Silly I know but thats the life of a student! :S

(Will get them changed soon though, as it's only a matter of time before I'll get pulled for something silly and a huge fine for an unroadworthy car.. )

[waynne]

Freddie - I'd go for some part worn tyres for now if I were you - £12 each typically and that will buy you a little time.

[fingers]

That would be you front wheel alignment. Even if you alignment was done when your tyres were fitted you should still get it checked every 3 months or so. It is so easy to knock it out, all you have to do is ht a pot hole or speed bump tat little bit too hard or brush the curb while parking once too many. This can be caused by camber and castor but is very unlikley.

http://www.familycar.com/Alignment.htm