Hello,
It seem my left tyres are wearing quicker then the right, especially on the outside. The centre is about even on both sides. I have them rotated every 5000km with a wheel alignment. (got a package when I got the tyres). They are the standard 215/60/16 Bridgestone Turanza's. They have done about 25000km I was hoping to get about 35-40000km. What would possible causes be? I can think of these issues:

1) Tight turning to get in and out of the garage (in a block of units)

2) Round abouts (we all love round abouts)

3) Bad wheel alignments? anyone

4) Suspension issue???? if so what??

Cheers.

could be a number of things Rob. Might be as innocent as misaligned geometry somewhere (alignment, toe etc).

On the other hand, older Haldex AWD systems (viscous coupling type) were prone to wearing one side more than the other due to a sick diff. I highly doubt that would be the issue. This can be caused by running unevenly worn tyres across the left-right of the car to begin with.

could be a number of things Rob. Might be as innocent as misaligned geometry somewhere (alignment, toe etc).
+1

Have you got a copy of your latest wheel alignment print-out? If you do, scan it and chuck it up.

I've got this aswell, I find it quite normal, theres nothing wrong with my car and my wheel alignment is 100% so i dunno, depends how you drive?

Most likely that this is caused by the road camber.

Fix is to reduce the rear wheel toe-in, and make sure that there is equal toe-in on both sides, maybe slightly less on the nearside.
Then then look at the amount of castor on the front.

I had similar issues, fix was to increase the castor on the LHS so that it is greater thsn the RHS,.

Old London Transport trick.
This is why the aftermarket suspension bush suppliers offer bushes to increase castor on the nearside, LHF for us in Aus.

Do you have to turn the steering wheel clockwise to keep your car from pulling to the left??

Gerry

I'll throw in an extra guess of combined low tyre pressures and faster cornering speed when making right turns.

Thanks for your replies. I'll have a look for the wheel alignment sheet when I get home, but will be getting another one tomorrow or Friday. I check my tyre pressure every 2nd fill up (once a fortnight) and especially before long trips or cruises. I tend to keep them all at 37 PSI for around town and 38 for long trips. I'll mention the castor and toe in adjustments to the tyre shop as well.

Is there a difference in the AWD alignment settings to the FWD?

Cheers!

No difference in the factory allowable tolerances.

Your average aligner will just work off the allowable tolerances. You need to ensure that your aligner is actually doing what you want - not what Mitsu specify as being "OK"....

Another thing that strikes me as odd is the fact it's the LHS only. How many rotations have you had since the tyres were fitted? It would appear to me that these guys are simply moving back to front - front to back etc., rather than swapping sides as well? I've had an issue with scalloped outer edges before but by 20,000kms, after 4 rotations it was evident on all corners so impossible to tell which corner was causing the issue. I'd reckon that it's actually one individual corner that's caused this but it now looks like the complete LHS is to blame.

Thanks Alscall, I ask about the rotation and if it make a difference moving from say front left to right rear, as they are not directional tyres. They get rotated every 5000km I've had 3 rotations so far. I on purpose get the fronts nice and "dusty" before I send it in, and they are at the back so the obvious sign they have been rotated.

Will have a "chat" tomorrow or Friday depending when I can get there.....

P.s. they are good tyres no complaints except this issue. Got them on "special" for $115 each for Turanza's is not bad. (oh and the manufactor date was 4 months before purchase) Maybe they wheren't made for AWD Magna's ?

Cheers,

It's possibly how you drive or wheel alignment. Are your tyres at least 95 load rated? It's very important with AWD magnas that you have the correct load rating.

I found my Pirrelli 225/50 R17's ride, wear and handle a lot better than the old Goodyear 215/60 R16's did now that I went to 380 SX 17" rims from stock 16's. AWD suspension is slightly different and they're heavier...

I agree with alscall about the tyre rotating. I usually do mine front to rear then the next time in an X pattern, so I get them taken off the wheel flipped around (directional) and and put on the opposite side and other end to the car then at te next one front to rear then repeat till they're worn....

Thanks Alscall, I ask about the rotation and if it make a difference moving from say front left to right rear, as they are not directional tyres. They get rotated every 5000km I've had 3 rotations so far. I on purpose get the fronts nice and "dusty" before I send it in, and they are at the back so the obvious sign they have been rotated.

Will have a "chat" tomorrow or Friday depending when I can get there.....

P.s. they are good tyres no complaints except this issue. Got them on "special" for $115 each for Turanza's is not bad. (oh and the manufactor date was 4 months before purchase) Maybe they wheren't made for AWD Magna's ?

Cheers,

Any tyre is suitable, as long as it is the correct load rating and correct width for the rim

Also, bare in mind that Mitsubishi decided to fit 215/60R16 tyres on 16x6 wheels whereas both Ford and Holden use 16x6.5 wheels. The extra width reduces the amount of sidewall buldge. Before I upgraded my wheels, it would still buldge even at 40 PSI and the extra buldge due to the extra weight and AWD fun really wreacked havoc on the outside shoulder of the front left tyre.

Left front Tyre wearing on the outside seems to be a common issue on the magnas. One of my workmates has an '00 TJ exec FWD that does it.
My AWD Veranda does it as well, though since the suspension change & wheel alignment, it seems to have largely alleviated this.

I think this may also have to do with the open wheeler front feeding most of the power to that side. Dunno.

Maybe something to do with the uneven length shafts?

I only got 18 months out of my last left front tyre. The other three are fine.
I suspect it has something to do with the 11 roundabouts (each way) i go through going to work.

Wheel alignment is critical. After a mild prang when somone tried to overtake me as I pulled into a parking bay & hit the rear wheel, a wheel alignment was supposed to have been included in the repairs. It didn't get done and I trashed a brand new set of Goodyear Assurance tyres in just 4000km of caravan towing. The combined rear toe-in was 44.4mm! Fronts were way off too.