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Thread: Uneven tyre wear part 2

  1. #1
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default Uneven tyre wear part 2

    After having the car for 1 year and a bit and having done the tracking three times, the rear tyres seem to like the inner sides quite a lot. I went to check the pressure the other day when the tyres were cold. All was well pressure wise, but when I touched the tyre...shock! The outer edge was cold, but the inside of the tyre was hot-warm Front tyres seem to be wearing down nicely and evenly!

    Can anyone suggest on how I should have the camber (or whatever) adjusted?
    My car is a 2003 Signum 3.0CDTi with the factory fitted sport suspesion.


    I'm booked for today in about 2 hours

  2. #2
    Regular Member m8internet's Avatar
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    Quote Originally Posted by Celes View Post
    the rear tyres seem to like the inner sides quite a lot
    Refer to my post a long time ago (early 2007)
    I noticed this on my second set of tyres, which had not been rotated rear to front as the fronts wore out
    I sent them to GoodYear for investigation and report
    To quote, "This tyre wear is normal on a Vectra C"

    How long (miles) have the rear tyres been on the car?
    Are you rotating the tyres as the fronts wear out?
    What tyre pressures are you using?
    What specification are the tyres (size, brand, speed and load ratings, etc) ?

    However, I have never noticed any discrepancy in heat across the tread of the rear tyres
    I am going on a long run later in the week (175 miles each way) and so will check the GoodYear F1 Assymetric which are currently fitted to the rear of my Vectra C

    Equally, the fronts (previously fitted to the rear) continue to wear on the inside edge (and there is nothing you can do about that) and then wear on the outside edges
    Ironically the higher tyre pressure then wears out the middle and by the end of the life of these tyres they have worn almost perfectly across the tread, hence why I didn't notice it on my second and subsequent set of tyres
    My latest set wore unevenly due to failed rear shocks and springs, but so far so good since they were replaced
    Last edited by m8internet; 1st August 2011 at 13:31.

  3. #3
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    Quote Originally Posted by m8internet View Post
    Refer to my post a long time ago (early 2007)
    I noticed this on my second set of tyres, which had not been rotated rear to front as the fronts wore out
    I sent them to GoodYear for investigation and report
    To quote, "This tyre wear is normal on a Vectra C"

    How long (miles) have the rear tyres been on the car?
    Are you rotating the tyres as the fronts wear out?
    What tyre pressures are you using?
    What specification are the tyres (size, brand, speed and load ratings, etc) ?

    However, I have never noticed any discrepancy in heat across the tread of the rear tyres
    I am going on a long run later in the week (175 miles each way) and so will check the GoodYear F1 Assymetric which are currently fitted to the rear of my Vectra C

    Equally, the fronts (previously fitted to the rear) continue to wear on the inside edge (and there is nothing you can do about that) and then wear on the outside edges
    Ironically the higher tyre pressure then wears out the middle and by the end of the life of these tyres they have worn almost perfectly across the tread, hence why I didn't notice it on my second and subsequent set of tyres
    My latest set wore unevenly due to failed rear shocks and springs, but so far so good since they were replaced
    I rotate the tyres every 3-4k miles. These (Michelin Primacy HP 225/45 R17 94W XL) have been fitted for the last 10k and I am rotating them tomorrow.

    At the moment the front tyres are pumped up to 2.5bar (36.2psi) and the rears to 2.4bar (34.8psi)

    Tracking has been done and now the steering wheel is straight, but the car still pulls to the right if I don't hold the wheel.

  4. #4
    Regular Member m8internet's Avatar
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    Default

    Quote Originally Posted by Celes View Post
    I rotate the tyres every 3-4k miles. These (Michelin Primacy HP 225/45 R17 94W XL) have been fitted for the last 10k and I am rotating them tomorrow.

    At the moment the front tyres are pumped up to 2.5bar (36.2psi) and the rears to 2.4bar (34.8psi)
    By rotation, I mean swapping the rears to the front as fronts wear out
    By swapping every 3K miles this simply evens out the wear and you will suffer the tread blocking issue on rear tyres that plagues the Vectra C

    If the rears have been fitted for the last 10K miles then swap to the front and wear them out, and proceed from there

    Correct tyre pressures for 225/45 R17 are :
    39 front / 35 rear
    Try that and compare
    Front tyre pressures below 37 will result in excess movement in the front suspension

    I currently have a slow puncture on the nearside front tyre and I can feel as soon as it goes below 36

  5. #5
    Full Member merikiito's Avatar
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    Vehicle : Insignia CDTi SRi NAV 160

    Trim : SRi

    Engine : A20DTH

    Year : 2009

    Mileage : 88000

    Default

    Have you checked the rear suspension arms for wear. These arms are the biggest cause of inner rear tyre wear on the Vectra. As for goodyear saying this is normal wear on the Vectra c thats rubbish. I have done in excess off 100k in Vectra c's and never had a rear tyre wear issue then maybe its because I change my rear suspension arms every 12-16 months

    check this handsome fellow in this youtube video showing you how to check the rear arms http://www.youtube.com/watch?v=h-LF-qQY-Lc
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

  6. #6
    Regular Member m8internet's Avatar
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    Quote Originally Posted by merikiito View Post
    As for goodyear saying this is normal wear on the Vectra c thats rubbish
    I have had several reports now and all are identical
    The first was GoodYear, the next was Michelin, then Dunlop (two sets of tyres), another from GoodYear and the latest was Michelin

    This is due to leaving the rear tyres in position until fully worn, no rotation

  7. #7
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    Engine : Z18XER


    Default

    Chassis alignment values for model year 2003 Signum
    Important: For the first time there are several alignment values for the Signum rear axle pertaining to different trim heights. The trim height that is specified here is measured from the centre of the wheel hub to the bottom edge of the wheel well at each side of the vehicle. The rear of the vehicle must also be made horizontal by distributing weights around the higher side of the vehicle at the rear.
    The values apply to vehicles with 70 kg/154 lbs. on each front seat and a half-full fuel tank.
    Front wheel adjustment
    Signum
    Signum with "Sport" equipment
    Signum with "Bad Road Surface" equipment
    Difference right/left maximum
    Camber
    –1° 02' ±45'
    –1° 05' ±45'
    –0° 55' ±45'

    Caster
    2° 44' ±45'
    2° 56' ±45'
    2° 38' ±45'

    Toe-in 1)
    0° 00' ±10'
    -
    Toe-in variation with inner wheel deflection of 20°
    1° 38' ±45'
    -
    Outer wheel deflection for 20° inner wheel deflection
    18° 22' ±45'
    -

    Important: Vehicle tilting that has been determined due to different left and right trim heights must be compensated for by putting additional weights in the boot. The height difference between the left and right sides of the vehicle must not exceed 1mm .
    Rear wheel adjustment
    in accordance with trim height 2)
    Signum
    Signum with "Sport" equipment
    Signum with "Bad Road Surface" equipment
    330 – 334
    Camber
    Toe-in 1)
    335 – 339
    Camber
    Toe-in 1)
    340 – 344
    Camber
    Toe-in 1)
    345 – 349
    Camber
    -2° 14' ±15'
    Toe-in 1)
    +0° 35' ±10'
    350 – 354
    Camber
    -2° 07' ±15'
    Toe-in 1)
    +0° 31' 30” ±10'
    355 – 359
    Camber
    -2° 00' ±15'
    Toe-in 1)
    +0° 28' ±12'
    360 – 364
    Camber
    -1° 53' ±15'
    -1° 53' ±15'
    Toe-in 1)
    +0°34' ±10'
    +0° 24' ±10'
    365 – 369
    Camber
    -1° 46' ±15'
    -1° 46' ±15'
    Toe-in 1)
    +0° 28' 30” ±10'
    +0° 20' 30” ±10'
    370 – 374
    Camber
    -1° 39' ±15'
    -1° 39' ±15'
    -1° 39' ±15'
    Toe-in 1)
    +0° 24' 30” ±10'
    +0° 16' 30” ±10'
    +0° 24' 30” ±10'
    375 – 379
    Camber
    -1° 32' ±15'
    -1° 32' ±15'
    -1° 32' ±15'
    Toe-in 1)
    +0° 20' 30” ±10'
    +0° 12' 30” ±10'
    +0° 20' 30” ±10'
    380 – 384
    Camber
    -1° 24' ±15'
    -1° 24' ±15'
    -1° 24' ±15'
    Toe-in 1)
    +0° 16' 30” ±10'
    +0° 08' 30” ±10'
    +0° 16' 30” ±10'
    385 – 389
    Camber
    -1° 17' ±15'
    -1° 17' ±15'
    -1° 17' ±15'
    Toe-in 1)
    +0° 12' 30” ±10'
    +0° 04' 30” ±10'
    +0° 12' 30” ±10'
    390 – 394
    Camber
    -1° 10' ±15'
    -1° 10' ±15'
    Toe-in 1)
    +0° 08' ±10'
    +0° 08' ±10'
    395 – 399
    Camber
    -1° 03' ±15'
    -1° 03' ±15'
    Toe-in 1)
    +0° 04' ±10'
    +0° 04' ±10'
    400 – 404
    Camber
    -0° 56' ±15'
    -0° 56' ±15'
    Toe-in 1)
    -0° 00' 30” ±10'
    -0° 00' 30” ±10'
    405 – 409
    Camber
    -0° 49' ±15'
    Toe-in 1)
    -0° 05' ±10'
    410 – 414
    Camber
    -0° 42' ±15'
    Toe-in 1)
    -0° 10' ±10'

  8. #8
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    Default

    Quote Originally Posted by merikiito View Post
    Have you checked the rear suspension arms for wear. These arms are the biggest cause of inner rear tyre wear on the Vectra. As for goodyear saying this is normal wear on the Vectra c thats rubbish. I have done in excess off 100k in Vectra c's and never had a rear tyre wear issue then maybe its because I change my rear suspension arms every 12-16 months

    check this handsome fellow in this youtube video showing you how to check the rear arms http://www.youtube.com/watch?v=h-LF-qQY-Lc
    Well I'm going to use that handsome fellows advice in the morning!

  9. #9
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    Quote Originally Posted by m8internet View Post
    By rotation, I mean swapping the rears to the front as fronts wear out
    By swapping every 3K miles this simply evens out the wear and you will suffer the tread blocking issue on rear tyres that plagues the Vectra C

    If the rears have been fitted for the last 10K miles then swap to the front and wear them out, and proceed from there

    Correct tyre pressures for 225/45 R17 are :
    39 front / 35 rear
    Try that and compare
    Front tyre pressures below 37 will result in excess movement in the front suspension

    I currently have a slow puncture on the nearside front tyre and I can feel as soon as it goes below 36
    I "lied" about the mileage of the tyres It's actually 10kkm not 10k miles The tyres that are now on the rear, have been on the front for the first 5kkm and I'll be rotating them tomorrow or the day after.

    When I had the tyres pumped up to VX spec, I had excessive wear on the middle (front tyres).

  10. #10
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    Oh yeah, forgot to say I had the rear banana arms replaced about 6 months ago.

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