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Thread: Cooper Rugged Trek Question

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    Cooper Rugged Trek Question

    I just got a set of Cooper Rugged Trek 35x12.50r20 installed yesterday and they aired the rears to 75-80 and the fronts 65-70.

    The truck itself feels a little squirrelly on the side to side, is this because of the pressure?

    I don't recall my old Mickey Thompson's being aired up that much.

    Anyone have experience?

    Running a 2500 Megacab.

    Sent from my SM-G986U using Tapatalk


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    Re: Cooper Rugged Trek Question

    To add to this, the door sticker does say 65 front, 80 rear.

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    Re: Cooper Rugged Trek Question

    What does the sidewall on the tire say for air pressure?


    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

    2016 RAM 3500 4x4 Laramie Crew Cab
    Cummins,G56, Rough Country level, Morimoto LED fog lights, LED headlights, Lund Attitude Steps sprayed with Line-X, DRL's Activated, 35x12.50R18 Falken Wildpeak ATW3, Fuel Vapor Wheels Matte Black w/Dark Tint, A.R.E. Truck cap and swing boxes

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    Re: Cooper Rugged Trek Question

    The door sticker is for the factory tires that came on the truck.


    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

    2016 RAM 3500 4x4 Laramie Crew Cab
    Cummins,G56, Rough Country level, Morimoto LED fog lights, LED headlights, Lund Attitude Steps sprayed with Line-X, DRL's Activated, 35x12.50R18 Falken Wildpeak ATW3, Fuel Vapor Wheels Matte Black w/Dark Tint, A.R.E. Truck cap and swing boxes

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    Re: Cooper Rugged Trek Question

    Here is the tire sidewall.



    Sent from my SM-G986U using Tapatalk


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    I WILL STAND! AK Bob's Avatar

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    Re: Cooper Rugged Trek Question

    Quote Originally Posted by jgruberman View Post
    To add to this, the door sticker does say 65 front, 80 rear.

    Sent from my SM-G986U using Tapatalk
    Are you absolutely sure about these pressures?

    My 2014 3500 is just the opposite and makes sense with the weight of the engine over the front tires.



    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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    Re: Cooper Rugged Trek Question

    Quote Originally Posted by jgruberman View Post
    Here is the tire sidewall. https://uploads.tapatalk-cdn.com/202...e784c2676b.jpg

    Sent from my SM-G986U using Tapatalk
    Keep in mind the 80psi is the max when cold.

    I would air mine up to that when I tow or haul anything heavy.

    I run mine 65 on the front and 60 rear.

    It wears excellent and rides a little smoother.

    I keep a little more air in the front because there is much more weight than in the rear.


    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

    2016 RAM 3500 4x4 Laramie Crew Cab
    Cummins,G56, Rough Country level, Morimoto LED fog lights, LED headlights, Lund Attitude Steps sprayed with Line-X, DRL's Activated, 35x12.50R18 Falken Wildpeak ATW3, Fuel Vapor Wheels Matte Black w/Dark Tint, A.R.E. Truck cap and swing boxes

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    Re: Cooper Rugged Trek Question

    You only need 80 PSI in the rear when towing something heavy it is the MAX PSI for the weight specified.

    I have the Toyo MTs with the three-ply sidewall.

    I run 65 in the front and 50 in the rear empty, and the wear is even.

    My 5'er is a 28 ft that maxes out around 10k lbs.

    I tested 70 PSI in the rear was best as my trailer isn't all that heavy.

    If I hitch up to something heavy like the gooseneck at work, I go with 80 PSI.

    2018 Ram 3500 (Aisin) Laramie 4X4 CCSB White/Silver.
    2018 Mustang GT Lightning Blue 6 spd manual.
    2021 Charger GT AWD Triple Nickel/Black



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    Re: Cooper Rugged Trek Question

    Quote Originally Posted by AK Bob View Post
    Are you absolutely sure about these pressures?

    My 2014 3500 is just the opposite and makes sense with the weight of the engine over the front tires.

    I will have to check to confirm when my wife gets home with the truck.

    It might be backward, but I'll have to confirm.

    Sent from my SM-G986U using Tapatalk


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  19. Top Of Page | #10

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    Re: Cooper Rugged Trek Question

    Nope this is it

    Sent from my SM-G986U using Tapatalk


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