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  1. #11
    Site Sponsor Dale G's Avatar
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    Quote Originally Posted by 50ST8R View Post
    To play devils advocate for those who drive their trailers over 65, the Goodyear tires are only rated to 65mph. Just sayin’


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    Kevin & Deb. 2021 Reflection 320 MKS
    2018 Ford F-350 Diesel SRW Platinum
    The Goodyear Endurance have a rating of 117/112N which the N is the speed rating which Goodyear says is 87mph. The Goodyear website as well as etrailer.com confirms the N is for 87mph.
    Dale
    Dale & Tammy
    Retired U. S Army and Retired Helicopter Pilot
    2021 Ford F-350, 6.7L Diesel, 4x4, Lariat Ultimate
    2018 Grand Design Imagine 2670MK (sold)
    2022 Grand Design Reflection 337RLS

  2. #12
    Long Hauler
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    Quote Originally Posted by 50ST8R View Post
    To play devils advocate for those who drive their trailers over 65, the Goodyear tires are only rated to 65mph. Just sayin’


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    Kevin & Deb. 2021 Reflection 320 MKS
    2018 Ford F-350 Diesel SRW Platinum
    Which Goodyears are you referring to? You may want to recheck those figures.
    Howard and Peggy
    2019 Momentum 351M, and 2018 RAM Cummins dually 6-speed.
    His: 1999 Honda Interceptor
    Hers: 2013 Spyder ST-S

  3. #13
    Rolling Along OurNewEra's Avatar
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    My GY Endurance ST225/75R15 load range E has a speed rating of 81 mph.
    Mike & Lisa
    Central Florida
    2021 Imagine 2970RL
    1996 Chevy K3500 Crew SRW 7.4L Gas

  4. #14
    Site Sponsor 50ST8R's Avatar
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    Quote Originally Posted by OurNewEra View Post
    My GY Endurance ST225/75R15 load range E has a speed rating of 81 mph.
    Thanks for educating me. I was going if the Goodyear tire guide provided to me when we bought the trailer not what was listed on the tires. Probably will still top out no more than 70. Still have to stop the 7 ton following me[emoji16]


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    Kevin & Deb. 2021 Reflection 320 MKS
    2018 Ford F-350 Diesel SRW Platinum
    Kevin and Deb. 50ST8R
    2021 Grand Design Reflection 320 MKS
    2018 Ford F-350 SRW 4x4 Diesel Platinum Edition

    [/SIGPIC]

  5. #15
    Fireside Member DragonDriver's Avatar
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    With my F350 and 337RLS combination I get just at or under 10mph driving 65mph. I guess I could push it faster but I feel safer at this speed and that's worth the extra couple gallons I have to pump.
    Pam and Doug
    2017 F350 (the Dragon) with 2015 GD Ref 337RLS (the Dragon's Tail)

  6. #16
    Site Sponsor timlisajax's Avatar
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    I have the 3.73 rear in my 2wd truck. I never exceed 65mph and consistently get 11mpg.

  7. #17
    Setting Up Camp
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    Just towed a 337 around 900 miles with a Ram 2500 diesel, 70mph, and averaged 11.6 mpg. More tailwind than not majority of trip.

  8. #18
    Setting Up Camp
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    Quote Originally Posted by 50ST8R View Post
    To play devils advocate for those who drive their trailers over 65, the Goodyear tires are only rated to 65mph. Just sayin’


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    Kevin & Deb. 2021 Reflection 320 MKS
    2018 Ford F-350 Diesel SRW Platinum

    Or not...lol

    Just Sayin'

  9. #19
    Site Sponsor Jerryr's Avatar
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    My expensive Goodyear G614 G rated 235/85-16 are only L rated for speed, , 75 MPH.
    https://simpletire.com/paid?v=1&tire...teProductSpecs
    Last edited by Jerryr; 09-08-2021 at 04:43 PM.
    Jerry & Linda
    Emma & Abby our Mini Golden Doodles & JR our Amazon Parrot
    2017 Reflection 337RLS, Build Date 01/2017, Titan Disk Brakes, Goodyear G614s 235/85/16 G Rated tires
    2022 F-450 King Ranch Ultimate, 4,868 lb Payload, Bedrug Bedliner, Andersen Ultimate II Aluminum 5th wheel hitch
    http://visitedstatesmap.com/image/FLGANCSCsm.jpg

  10. #20
    Fireside Member
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    I also get 11 miles per gallon with the duramax with 3.73 gears . I also keep my tow mode on all the time.


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