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Positive camber ? V70-XC70 1998

posted by  someone claiming to be Sue on  Sun Mar 20 09:48 CST 2011 [RELATED]

Both front tires show premature wear on the outside, as if camber was too much on positive side. Is it adjustable on this car?








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    Positive camber ? V70-XC70 1998

    posted by  jadnhm on  Sun Mar 20 13:56 CST 2011
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Tue May 22 18:03 CST 2012
    [RELATED]

    I had the same prob last year. I ended up replacing every suspension component before I finally gave in and changed the struts. They were in MUCH worse shape than I suspected. These cars have very good front springs and do a good job of masking dead struts on an old car that you expect to feel a bit sloppy. If your mileage is above 150k or so I'd start seriously thinking about doing your front struts.

    FWIW the alignment guys /should/ check carefully and tell you if your struts are bad but it's been my experience that most either don't know how or don't care. While Iwas chasing this problem replacing components left and right I specifically asked at least two different alignment techs to check the struts for me and I know now that they didn't/couldn't.
    --
    1998 V70 AWD->FWD->AWD Turbo 215k+








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      Positive camber ? V70-XC70 1998

      posted by  someone claiming to be Tom on  Sun Mar 20 22:21 CST 2011 [RELATED]

      Unfortunately many tire shops don't do alignments well. They may have the equipment but it requires experience. Also, VOLVO specs for this car are not correct. People have gone with zero on toe, and gotten more mileage of of tires. Factory specs only get around 15000 tops, regardless of tire brand. Since Camber is not adjustable, folks just start replacing parts...you may as well keep replacing tires. It costs the same ...







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        Positive camber ? V70-XC70 1998

        posted by  jadnhm on  Mon Mar 21 06:54 CST 2011
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        last visit: Tue May 22 18:03 CST 2012
        [RELATED]

        Hi Tom, I'm very interested in your opinion on the alignment specs.

        What makes you say the toe specs are wrong?

        Are the manual specs different than the factory specs?

        What do you think they /should/ be and why do you think that? Any drawbacks to your approach vs Volvo's manual specs?

        I have the following info which I obtained from the Volvo manual:


        
                               Alignment Info                               
        

        
wheelbase          : 266 cm
        

        
front track width  : 152 cm
        

        
                      AWD      FWD
        
rear track width   : 149 cm   147 cm
        
 delta from front  : 3.0 cm   5.0 cm
        
 delta per side    : 1.5 cm   2.5 cm
        

        
Note : C70 152 cm front and rear
        

        
wheel rim          : 425 mm diameter
        

        
ball joint         : 0.5 mm of play
        

        
tire pressure (use unloaded for alignment)                                  
        
 unloaded             kPa    psi
        
   front           :  220    31.3
        
   rear            :  230    32.7
        
 fully loaded
        
   front           :  250    35.6
        
   rear            :  280    39.8
        

        
front              angle               mm (wheel rim)         deviation L/R  
        
 caster             3.35° +/- 1.00°                           1.00°
        
 camber             0.00° +/- 1.00°    0.0 mm +/- 7.42 mm     0.20° +/- 0.7°
        
 toe                0.33° +/- 0.10°    2.4 mm +/- 0.70 mm     0.10°
        
   per side         0.165°+/- 0.05°    1.2 mm +/- 0.35 mm                   
        

        
rear                                                                        
        
 ride height        381 mm fender edge to wheel center                    
        
 camber             0.25° +/- 0.75°
        
 toe                0.10° +/- 0.20°
        
   per side         0.05° +/- 0.10°
        
   dev. from thrust 0.25°

        --
        1998 V70 AWD->FWD Turbo 200k+








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          Positive camber ? V70-XC70 1998

          posted by  someone claiming to be Tom on  Mon Mar 21 10:02 CST 2011 [RELATED]

          Experience shows that positive and negative toe causes premature tire wear. Trial and error if you will...Perhaps things would be different if camber was adjustable, but on this car, it is not.








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    Positive camber ? V70-XC70 1998

    posted by  KlausC on  Sun Mar 20 11:29 CST 2011
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    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Toe in will do the same thing. Only and alignment will tell. I do not believe camber can be adjusted, but I have been wrong before.

    Klaus
    --
    Always willing to listen, just not able to take direction.







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