Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Which is stronger, bias or radial?

Discussion in 'The Garage' started by Polaris, May 9, 2004.

  1. Polaris

    Polaris 1/2 ton status

    Joined:
    May 30, 2002
    Posts:
    1,182
    Likes Received:
    0
    Location:
    Rhinelander, Wisconsin
    Looking at IROK's in the very near future. Last weekend I took a hunk out of the sidewall, right down to the cord, on my Pro Comp muds. So in tire shopping, I'd like to choose which has the stronger sidewall. Thanks for any input!
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    Generally the number of sidewalls plys denotes strength. If two tires have the EXACT same amount of sidewall plys, then the bias tire would be stronger. /forums/images/graemlins/k5.gif
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Bias without question is stronger no matter what tire you choose.
     
  4. 84gmcjimmy

    84gmcjimmy 1 ton status

    Joined:
    Dec 3, 2003
    Posts:
    12,838
    Likes Received:
    0
    Location:
    B.C. CANADA
    Bias's!
     
  5. Polaris

    Polaris 1/2 ton status

    Joined:
    May 30, 2002
    Posts:
    1,182
    Likes Received:
    0
    Location:
    Rhinelander, Wisconsin
    That was the answer I was hoping for, but it still leaves me wondering why?
     
  6. 84gmcjimmy

    84gmcjimmy 1 ton status

    Joined:
    Dec 3, 2003
    Posts:
    12,838
    Likes Received:
    0
    Location:
    B.C. CANADA
    Bias are built for heavy off-road use. Radials are made for off-road use and DD.
     
  7. BlazerGuy

    BlazerGuy 3/4 ton status

    Joined:
    Apr 20, 2000
    Posts:
    9,206
    Likes Received:
    0
    Location:
    abcde
  8. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    To be more technical...Radials have belts that run long ways in the tire so it has less rolling resistance, wobbles less, runs cooler, and rides better. The down side is that with the belts running the rotation of the tire...the sidewalls don't flex as well as a bias tire.
    With a bias tire the cords run side to side. This is why they are so good offroad because they can "bend" to the shape of trail obstacles better when aired down. The sidewalls are stronger usually because of the direction of the cords, the main reason swampers have such tough sidewalls is mainly because they have 6-10 plys and they are thick, not just because they are bias ply. /forums/images/graemlins/thumb.gif
     
  9. 84gmcjimmy

    84gmcjimmy 1 ton status

    Joined:
    Dec 3, 2003
    Posts:
    12,838
    Likes Received:
    0
    Location:
    B.C. CANADA
    There we go, smart people /forums/images/graemlins/bow.gif
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    An aired down radial has way more sidewall flex than a bias ply. My old 36" TSL's didn't show any sidewall bulge even as low as 7 psi, and my new 40's are the same. A radial at 7 psi is considered flat, or damn close to it.

    As for thick sidewalls...not really. For thick sidewalls you need to go to Michellin's. I've seen a TSL cut up, and the sidewall is no more than 1/4"-3/8" thick. The Michellin was easily twice as thick.

    The bias is tougher than the radial, but it's also rougher riding, has more rolling resistance, and will be wore out that much quicker.

    Rene
     
  11. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    Radial plys go from bead to bead across the tire.
    Bias plys also go from bead to bead but do it at an overlapping angle (one goes one way the next goes the other) making a cross hatch pattern.

    Bias tires (unless we are talking about wrinkle wall slicks) generally have stiffer side walls. They also all have the same # of plys in the sidewall as the tread where radials have more plys on the tread and less on the sidewall.
     

Share This Page