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Widest tire on 8 inch wheel

Discussion in 'The Garage' started by FL84K5, Jan 28, 2003.

  1. FL84K5

    FL84K5 1/2 ton status

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    Which is the widest tire I can get away with running on an 8 inch wide wheel?
     
  2. k5ntexas

    k5ntexas 1/2 ton status

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    i would say 12.50 but ya can go wider its just that its funny lookin and not a good way to get them to wear.

    jacob
     
  3. chulisohombre

    chulisohombre 1/2 ton status

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    i would not go much over 12.5 0r 13.5 either personnally.the effect would be a lot of overlap on the bead and if aired down could rip the tire on the bead against a rock or other object.plus it would look real funny.
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    My 39.5x15x15's are on 15x8's./forums/images/graemlins/eek.gif I think they'd look and perform better on 15x10's though.

    rene
     
  5. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    I run 42x15x15 TSLs on 15x8 steels. Works great, though it would be pushing it pretty bad for a street rig. Off road I can air down to 6 lbs or so without blowing a bead (yet) and it helps protect the side walls (and rim/bead) since they do not bulge out so much when aired down. On the road, it would likely make it a bit squirmy and cause it to wear in the center...
     
  6. schmuck

    schmuck 1/2 ton status

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    im running 35x12.50 on 8inchers and just by the way those look i will not go any larger on eights
     
  7. ZonkRat

    ZonkRat 1/2 ton status

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    Second set 16X38.5s on 8in.Like said makes them wear centers more on road.Been low as 4 psi with no probs.Think it protects sidewalls more on narrower wheel.Nephew ran 15X39s on 8in,no probs.Same tires on 10s would break down at 8-10 psi.{front}. /forums/images/graemlins/crazy.gif /forums/images/graemlins/truck.gif /forums/images/graemlins/thumb.gif
     
  8. balzackks84

    balzackks84 1/2 ton status GMOTM Winner

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    How bad is the wear in the center? I was planning on running 14.5 on 8" rims and after seeing this thread, I am not so sure.
     
  9. Sandman

    Sandman 3/4 ton status Author

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    You could probably play around with the air pressure to get it to wear right.
     
  10. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Like Sandman said, you can mostly correct it with air pressure, but you'll have to guess/experiment. Slightly lower pressure will keep the center from wearing as bad. But you don't want to go too low or you'll get heat, mileage, and squirm problems...
     
  11. FL84K5

    FL84K5 1/2 ton status

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    Thanks for all the replies. I think I'm going to just play it safe and get 15 inch wide tires when I upgrade to 8 lug and can get 10 inch wide wheels.
     
  12. ZonkRat

    ZonkRat 1/2 ton status

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    If you do more road miles than off.Get the wider wheels,prob get more milage from same tire ason narrow wheel.Tire will run flater tread and run cooler.Narrow wheel needs lower pressure for tread to stay flat,makes it flex more and builds more heat.I run 14-16 psi in 16X38.5X15s and tread still doesn't run flat.They stay on 8in wheel a little better at low press. /forums/images/graemlins/confused.gif /forums/images/graemlins/crazy.gif /forums/images/graemlins/truck.gifer /forums/images/graemlins/thumb.gif
     
  13. cdoggwsu

    cdoggwsu 1/2 ton status

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    Anyone got more input on this? I just picked up a set of 16x8" stock steelies (4.5" BS) and I was hoping to run 35x12.50's, but most of the stuff I've read says the biggest you can(should!?) go is 275/70/r16 which works out to a 10.50" or so. Basically, what's the reasonable point that most places would refuse to mount them?

    This will be primarily trail usage with a little street (my 2 mile commute across town twice a day).
     
  14. redbird00

    redbird00 1/2 ton status

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    you should be fine, i'm running 38x14.50 on a 15x8 wheel, it should hold the bead better when aired down as well...

    also running 35x12.50 on 17x8 wheels on the dd.
     
  15. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    Holy ancient threads Batman!!! :eek1:
     
  16. redbird00

    redbird00 1/2 ton status

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    haha i didn't even see that, i just looked at the post right before mine! :haha:
     
  17. jonathon

    jonathon 1/2 ton status

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    I'm running a 315/75r16 on a 16x7.. no issues.
     
  18. wayne

    wayne 3/4 ton status

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    A 12.50 on a 8" rim is fine for the street and trail.
     
  19. cdoggwsu

    cdoggwsu 1/2 ton status

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    It was either post a new thread or use one where the question has been asked before.:wink1:

    Thanks for the input, guys! My only other concern is that the 4.5" backspacing will rub while turning.
     
  20. 82355

    82355 1 ton status Premium Member GMOTM Winner

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    I am running 35x12.50x16.5" on a 16.5x6.75" rim.

    Martin
     

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