1. austindavis1993

    austindavis1993 Member

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    Has anyone ever had an issue with dog tracking, my 93 feels very unstable going down the interstate, i can feel the rear of my car swaying back and forth, my alignment is great, wondering if it could be the tires that i am using? help please.
     
  2. SHOspazz92

    SHOspazz92 Banned

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    Check your tire pressure. Then make sure your lug nuts are tight and torqued down. If that is ok then check to make sure your rear swaybar is still firmly in place. If that's good to go then I would jack the rear of the car up and give the wheels a solid shake to make sure your wheel bearings are still in good shape.
     
  3. austindavis1993

    austindavis1993 Member

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    could my rear sway bar cause that effect, the body mounts for the bar are oblong so it allows the bar to move up and down unevenly.
     
  4. sperold

    sperold Last to Know Supporting Member

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    Dog tracking usually means the car does not exhibit any unusual quirks in handling, but if you follow the car, it is not square on the road..... you see one side plainly while you are behind. Is that what you have?
    I would concentrate on the rear wheel alignment (toe-in especially) and look for tire wear on either the inside or outside of the tread surface.
    Broken belts on tires can give you crazy symptoms, throw on your winter tires / rims and see if there is a difference.
     
  5. austindavis1993

    austindavis1993 Member

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    I do have excessive inner tire wear on my rear tires but the wear came from the front which is why I rotated them, maybe I need new tires, suggestions on good everyday tires with a decent speed rating?
     
  6. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    sounds like you need an alignment. the rear wheels being toed out can cause all of the symptoms you describe.
     
  7. austindavis1993

    austindavis1993 Member

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    But I just had an alignment and still does it
     
  8. sperold

    sperold Last to Know Supporting Member

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    It is the alignment, no matter how recently it was done.
    It really show up in the winter months as the road will be both bare and snow covered in the same stretch of road. As one real wheel encounters snow, the other toed-in or toed-out tire that has traction will move the car in that direction. That goes back and forth as you drive. You are experiencing this in dry warm weather, so that tire wear was a warning signal.
    If it was aligned, you will have a data sheet attached to your bill. Let us know the rear wheel data.
     
  9. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    the problem is that the factory spec allows some toe-out on the rear, and many tires will not tolerate that - they will cup and the rear of the car will be squirrelly or darty on the freeway. you need the rear toed in more than it is.
     
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  10. austindavis1993

    austindavis1993 Member

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    Does anyone have a good baseline factory specifications for alignment?
     
  11. sperold

    sperold Last to Know Supporting Member

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  12. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    those are the factory numbers and from my experience you cannot run toe-out on the rear, even though the factory says its okay. the more negative camber you have on the tire, the more toe-in you need to avoid wearing/cupping the inside edge of the tire.

    if you just had an alignment, you should have a report that gives you before and after of the caster/camber/toe. look at that report on the rear and see what it says the toe is. if it is toed out at all, you need to toe it in by at least enough to get it less than zero. if it is zero or toed in now, you need to tell them that you need another 1/16" of toe. how much toe-in you need depends on the camber, and since we don't know either of those, we cannot tell you the 'right' number, but we can tell you its more toe-in than you have now.
     
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  13. turbo79

    turbo79 SHO Member

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    BF Goodrich Traction T/A

    About tires, I've had good performance with BF Goodrich Traction T/A tires 215X60 on slicers, they're "V" rated (140 mph).

    We have a set on my wife's '92 (a SHO), that were once on my '92 and, when on vacation in Colorado a few years back tracked very straight on I-70 taking those curves at 80 mph+ west of Denver near the Moffett Tunnel. They wear well too.

    In case you wonder (?) those tires sat for a while my SHO was down, then after taking them off, wheels and all, for some Cooper 225X55s and 7.5 " wheels.
     

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