1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

New Member, Info on Cupped Tires?

Discussion in 'Wheels & Tires' started by NMW 4x4, Sep 22, 2012.

  1. Sep 22, 2012 at 8:42 AM
    #1
    NMW 4x4

    NMW 4x4 [OP] Wheels With Moose.

    Joined:
    Sep 22, 2012
    Member:
    #87462
    Messages:
    215
    Gender:
    Male
    First Name:
    Walt
    Presque Isle, Maine
    Vehicle:
    '15 Access Cab SR5 4x4
    Hey guys, this is my first post here so bear with me;

    I've been a long-time member of the Jeeping community, having owned many Jeeps over the years. I've become fairly knowledgeable with mechanics, I've always done my own repairs. However, I've never owned a vehicle with IFS before, and know basically nothing about it's design.

    I recently purchased a 2007 Access Cab 4x4 with 191,000 miles on it, for the steal price of $5,000. It's in mechanically good shape NOW, but it's had some recent work done, including new brakes all around and new CV Shafts up front.

    The truck came with a set of 245/75/16 Cooper Discoverer S/T's on it, Load Range E. The tires have less than 10K miles on them. However, the tires that were previously on the front got cupped pretty bad from the worn CV's, and are worn down to about half-tread. (That's some serious tread wear!) The tires that were originally on the rear look in brand new condition.

    Now, the PO replaced the front CV shafts and rotated the tires front/rear so the good tires are up front and the cupped tires in the rear. The cupped tires are bad enough to shake the whole truck between speeds of 20-80 MPH. Also, the shaking is felt in the steering wheel when the brakes are applied, which would lead me to believe warped rotors, but the rotors are new?

    So, what would you guys do? Take it in for an alignment and have them re-balance the tires? Run it and wait for the cupped tires to wear down, or replace the two cupped tires? Replace all four?

    What're your thoughts? Thanks!

    -Walt
     
  2. Sep 22, 2012 at 8:48 AM
    #2
    OZ-T

    OZ-T All of those moments....will be lost.....in time

    Joined:
    Dec 15, 2009
    Member:
    #27584
    Messages:
    22,035
    Gender:
    Male
    First Name:
    Peter North
    British Columbia
    Vehicle:
    Mag Grey 09 Trd Sport DCLB 4x4
    OME 885x , OME shocks and Dakars , Wheelers SuperBumps front and rear , 275/70/17 Hankook ATm , OEM bed mat , Weathertech digifit floor liners , Weathertech in-channel vents , headache rack , Leer 100RCC commercial canopy , TRD bedside decals removed , Devil Horns by Andres , HomerTaco Satoshi
    Welcome ,

    How would worn CV's result in cupped tires ? Isn't that more a result of incorrect pressures ?

    Great deal on the price BTW .
     
  3. Sep 22, 2012 at 8:52 AM
    #3
    NMW 4x4

    NMW 4x4 [OP] Wheels With Moose.

    Joined:
    Sep 22, 2012
    Member:
    #87462
    Messages:
    215
    Gender:
    Male
    First Name:
    Walt
    Presque Isle, Maine
    Vehicle:
    '15 Access Cab SR5 4x4
    Well, as far as tire pressure is concerned, it's generally a result of too little pressure and prolonged highway speeds.

    However, I know on a solid front axle vehicle, it can occur from worn ball joins, a worn wheel bearing, tie rod ends.

    I know very little about the dynamics of an IFS rig, the P/O just told me the cupping was the result of worn CV's. It wouldn't surprise me at all if it was something totally unrelated.
     
  4. Sep 23, 2012 at 6:24 PM
    #4
    NMW 4x4

    NMW 4x4 [OP] Wheels With Moose.

    Joined:
    Sep 22, 2012
    Member:
    #87462
    Messages:
    215
    Gender:
    Male
    First Name:
    Walt
    Presque Isle, Maine
    Vehicle:
    '15 Access Cab SR5 4x4
    Bump for some other thoughts?
     
  5. Sep 23, 2012 at 6:28 PM
    #5
    KPT

    KPT sees what you did there.

    Joined:
    Sep 3, 2009
    Member:
    #22227
    Messages:
    32,400
    Gender:
    Male
    Vehicle:
    09 Prerunner
    Katskin leather interior, Satoshi grille, Bilstein 5100's @ 1.75, rear leaf TSB, magnaflow exhaust, 18x9 BBS RW's, 275/65/18 Nitto TG's, black headlights, black taillights, Hella Supertones, weathertechs, EFX tri-fold tonneau, n-Fab steps
    The cvs are not a structural part of the suspension. They would not cause cupping of tires.
     
  6. Sep 23, 2012 at 6:31 PM
    #6
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,160
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    hows the alignment on it? mine are cupped/cupping due to my alignment getting bumped out everytime I wheel it. You can save yourself a few bucks and do a quick check on the toe set at home. Get under the truck with a tape measure. Measure the distance from center of tire to center of tire front side and back. IIRC if the difference between the front and rear is 1/16" of an in toed IN thats good.

    What condition are the steering components in? Tie rods inner/outer good shape with no play?

    What kind of wheels are they, factory or aftermarket? (vibs)
     
  7. Sep 24, 2012 at 6:19 AM
    #7
    Pugga

    Pugga Pasti-Dip Free Since 1983

    Joined:
    Jun 18, 2010
    Member:
    #39131
    Messages:
    28,792
    Gender:
    Male
    First Name:
    Mike
    Massachusetts
    Vehicle:
    '13 Ford F-150 SCREW
    F-150 Mod
    I've also got a 2007 and for the life of me I can not figure out why my tires cup. It's not horrible and I can keep the tires even by rotating them regularly at 5,000 miles but since about 30k miles, the truck has cupped tires. A number of things can cause it, tire pressure, bad shocks, incorrect balancing, etc. I did some research and it seems cupping can be damn near impossible to diagnose.

    Depending on how bad the shaking is, I'd run with the cupped tires on the rear if it's tolerable and try to figure out what's causing the front to shake so you don't cup those tires also.
     
  8. Sep 24, 2012 at 6:24 AM
    #8
    98tacoma27

    98tacoma27 :POOPCORN: Thor

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    48,249
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5, 88 SR5 PU, 98 TRD OR (CRUSHED)
    5100's all on fours
    I've been working through the same issue with the last two pars of sneakers. I believe I might have a bad ball joint(s). My billies are only about 3 years old and are in good condition (not leaking). I have the cupping on both front tires also. I have ruled out balancing because the rears are fine (even tread wear).
     
  9. Sep 24, 2012 at 6:34 AM
    #9
    Pugga

    Pugga Pasti-Dip Free Since 1983

    Joined:
    Jun 18, 2010
    Member:
    #39131
    Messages:
    28,792
    Gender:
    Male
    First Name:
    Mike
    Massachusetts
    Vehicle:
    '13 Ford F-150 SCREW
    F-150 Mod
    Good to know! I'll look into the ball joints but they were fine with 0 play this past summer (checked them when I replaced my LCA bushings). Otherwise, we might be chasing the same problem. I've also got fairly new billies in good shape and can't figure out the cupping issue at all. My Coopers seem to show the cupping a lot more than my Bridgestones though...
     
  10. Sep 24, 2012 at 6:35 AM
    #10
    98tacoma27

    98tacoma27 :POOPCORN: Thor

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    48,249
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5, 88 SR5 PU, 98 TRD OR (CRUSHED)
    5100's all on fours
    It chewed my Bighorns to shreds :pout:
     
To Top