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Technical Rotating bias ply's.

Discussion in 'Traditional Customs' started by Rocket88, Sep 12, 2013.

  1. Rocket88
    Joined: Jul 11, 2001
    Posts: 911

    Rocket88
    Member

    Can I swap the 2 fronts side to side, does the direction matter?
     
  2. tfeverfred
    Joined: Nov 11, 2006
    Posts: 15,792

    tfeverfred
    Member Emeritus

    I have a friend with a '53 Chevy and he's never rotated his bias ply tires. I'd think, if the tread pattern was the same, switching them around shouldn't matter. If your doing this due to uneven tread wear, maybe you need to check the frontend.
     
  3. Rocket88
    Joined: Jul 11, 2001
    Posts: 911

    Rocket88
    Member

    The front end is new, I chewed one up a bit the first couple weeks before I got a wheel alignment.
     
  4. tfeverfred
    Joined: Nov 11, 2006
    Posts: 15,792

    tfeverfred
    Member Emeritus

    Well, if the tread direction isn't different, what's the issue? Swap away.
     

  5. Torchie
    Joined: Apr 17, 2011
    Posts: 1,078

    Torchie
    Member

    You can swap them with no problem.
     
  6. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,608

    Rusty O'Toole
    Member

    Recommended way to rotate bias ply tires, to equalize wear:

    LF to LR

    LR to RF

    RF to RR

    RR to spare

    Spare to LF
     
  7. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member

    my first after High School job was at the biggest tire shop in town, during the bias days, when radials were very uncommon.

    The boss said bias can do an X swap to opposite corners, or there was a complicated version, if you used the spare tire also.

    He said radials should not be X'd as the steel plies take "a set" and should only rotate in the same direction. So, LF to LR, but not to opposite corners
     
  8. 1955IHC
    Joined: Aug 20, 2013
    Posts: 636

    1955IHC
    Member

    Tires need to be rotated. Yes fronts will wear differently then the rears no matter what. Even if the front end is in perfect condition. Here is a diagram showing the proper rotation sequence.

    [​IMG]

    Sent via Western Union Express.
     
  9. tolo2go
    Joined: May 29, 2013
    Posts: 50

    tolo2go
    Member

    This has helped. Thanks for putting this information out here.
     
  10. Mr48chev
    Joined: Dec 28, 2007
    Posts: 30,192

    Mr48chev
    Member

    The chart that 1955IHC posted was pretty well standard in the early 70's at any placed that serviced tires.

    In the early 70's some tire companies had trouble with radials breaking down structurally when they were crossed to the other side. The theory was that they had taken a directional set in the casing and the tire was run in the other direction the materials in the tire ended up getting pulled apart. I don't know if that is correct or not but I replaced a lot of radials with separations in the tread or sidewalls in the early 70s when I worked in a tire store. The bias tires didn't care where you put them or where you moved them to but not moving them cut tire life in half on most of them. I think the Firestone Deluxe champions were rated for 25K at that time That was if you rotated them every 5000 miles faithfully.
    It took the local tire store guys a long time to grasp the concept that I didn't worry about tire wear too much on my 48 as I have run big and littles on it with a huge difference in size for over 35 years. A set of front tires every so often was just part of the deal.
     
  11. blubomber
    Joined: Sep 7, 2005
    Posts: 27

    blubomber
    Member

    I have 5000+ miles on my Firestone bias-ply and have not rotated them yet. I think I personally would just go back to front same side.
     
  12. derpr
    Joined: Mar 11, 2007
    Posts: 257

    derpr
    Member

    wow. thanks for the info. I just had a blow out on a radial tire now I'm wondering if I rotated left to right.
     
  13. atomickustom
    Joined: Aug 30, 2005
    Posts: 3,408

    atomickustom
    Member

    Rotating a radial left to right shouldn't cause a blowout. Worst case scenario is ply separation, which would lead to vibration not blowout.
     
  14. Some bias plys are directional if they are they will have an arrow on them, otherwise bias plys don't care.
     
  15. fsae0607
    Joined: Apr 3, 2012
    Posts: 871

    fsae0607
    Member


    They won't. I worked at a tire shop for six years and we used to do straight and cross rotations all the time, no issues. I always cross rotate on my DD and so far no problems.
     
  16. Spare?? We don't need no stinkin' spare;o) You can put them any way you want as long as they're the same size. In the early days of radials in the U.S. the rotation had to be the same direction or the tires would fail so they could only be switched to the front or back on the same side of the vehicle (as we were told, in reality U.S. tire makers didn't how to make a worthy radial tire) Including the spare was more complicated so wasn't usually done. Today I thinks you can rotate them as above but I still don"t and just replace them four at a time.
     
    Last edited: Sep 13, 2013
  17. 1955IHC
    Joined: Aug 20, 2013
    Posts: 636

    1955IHC
    Member

    :eek:No you just need the guy like me with a uni-lug spare on the truck and the extra in the bed. :D:D:D:D:D:D:D:D

    Sent via Western Union Express
     
  18. Your right, but I'm relying on some luck and a extra big can of fix a flat with me always. I ain't got room for a spare.
     
  19. 1955IHC
    Joined: Aug 20, 2013
    Posts: 636

    1955IHC
    Member

    I'm just giving you a hard time. If I had something small that didn't have the room I'd take my chances to. However I perfer a plug kit over fix-a-flat.

    Sent via Western Union Express
     
  20. T.L.
    Joined: May 24, 2011
    Posts: 207

    T.L.
    Member
    from Colorado

    I really don't see the point in cross-rotating any type of tire. Front-to-back should be sufficient (and less of a hassle)...
     
  21. If, for various reasons, your tires have abnormal wear patterns ( like tread worn more on one side than the other, cupped, etc changing the rotation will allow you to drive on them longer until you save up enough money (if ever) to repair the f.e. alignment and buy new rubber. From back in the day and bias ply tires.
     
  22. 1955IHC
    Joined: Aug 20, 2013
    Posts: 636

    1955IHC
    Member

    There are other factors also. Each corner of the car is subjected to different factors. Weight, steering, crown of the road, etc. No cross rotation in not necessary, but it will make it will help ensure all tires wear evenly and help you get the best possible mileage out of them.

    Sent via Western Union Express
     
  23. Rocket88
    Joined: Jul 11, 2001
    Posts: 911

    Rocket88
    Member

    Thanks for the replies, I swapped the 2 fronts the other day.
    I can't swap the backs to the front because of the way I mounted my sombrero's. I want to fix that this winter.
    No spare for me either, just a plug kit and flat in a can.
     

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