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LP22.5 vs 11R22.5 and rolling resistance

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Freightlinerbob, Nov 8, 2012.

  1. Nov 8, 2012 #1
    Freightlinerbob

    Freightlinerbob Road Train Member

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    I emailed Bridgestone and asked the following:

    "Is there a difference in rolling resistance between a LP 22.5 and an 11R22.5 tire? And how does it affect fuel economy? Would the difference, if any, be measurable if just 8 or 10 tires were one size or the other? As in maybe just a tractor or trailer having the more fuel efficient tires.

    If an 18 wheeler were equipped with all 11R22.5 vs LP22.5 tires, what would be the difference in fuel economy? "

    And the answer:

    "Generally speaking many LP22.5 tires have a slightly lower rolling resistance than their 11R22.5 counterpart, however, it is not true in all cases, and the difference is probably too small for the owner/driver to measure."

    Regards,

    Greg McDonald
    Engineering Manager Corporate Accounts
    Bridgestone America's Tire Operations

    Interesting.
     
    Freightlinerbob, Nov 8, 2012
    Freightlinerbob, Nov 8, 2012
    #1
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  3. Nov 8, 2012 #2
    Cowpie1

    Cowpie1 Road Train Member

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    Cowpie1, Nov 8, 2012
    Cowpie1, Nov 8, 2012
    #2
  4. Nov 8, 2012 #3
    Freightlinerbob

    Freightlinerbob Road Train Member

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    That tool does not let you choose tire sizes, does it?
     
    Freightlinerbob, Nov 8, 2012
    Freightlinerbob, Nov 8, 2012
    #3
  5. Nov 8, 2012 #4
    Oscar the KW

    Oscar the KW Going Tarpless

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    Not that I could find.
     
    Oscar the KW, Nov 8, 2012
    Oscar the KW, Nov 8, 2012
    #4
  7. Nov 9, 2012 #5
    Colorato

    Colorato Road Train Member

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    No. Michelins tire chart currently only shows the rolling resistance for the most popular size in that make.
     
    Colorato, Nov 9, 2012
    Colorato, Nov 9, 2012
    #5
  8. Nov 9, 2012 #6
    heavyhaulerss

    heavyhaulerss Road Train Member

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    This question will forever go without a definite result. I have changed from lp 22.5 to 11r 22.5 over 10 years ago. changed from all position to lug, to 3 different types of tread pattern. low pro may or may not have less r.r. 11r22.5 lowers the rpm at the same speed than the l.p. I always saw an improvement in m.p.g in a all position or steer tires when I put on my drives, compared to lugs, but the lugs lasted over 1, 1-1/2 years longer. take in consideration the amount of flats that occurred with the all position, were numerous compared to the lugs, which I may had 4 punctures since 08' & still going. the bottom line which for me is which tires over their life cost me more in the end? I still do not know. it is more longevity or better m.p.g. I think the response to the r.r. question was about right.
     
    heavyhaulerss, Nov 9, 2012
    heavyhaulerss, Nov 9, 2012
    #6
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