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285/70/17 tire pressure

Discussion in 'Wheels & Tires' started by Oobaa47, May 15, 2018.

  1. May 15, 2018 at 8:45 PM
    #1
    Oobaa47

    Oobaa47 [OP] New Member

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    Just curious, for everyday driving, what kind of tire pressure is everyone running with their 285's? Thanks!
     
  2. May 16, 2018 at 5:55 AM
    #2
    ckon

    ckon New Member

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    Tinted front windows | Hard-wired radar detecter | Heritage grille | Bumper, wheelwell and mudflap mod | 285/70 Nitto Grapplers | Plasti-Dipped valances, rack rails and logos | Replace all interior lamps w/LEDs | XenonDepot HIDs | Salex console and glove box organizers | RCI aluminum skid plate | Sprint Booster | Bilstein 5100 Shocks - Leveled @ .85 |
    35 for me so far but still experimenting.
     
  3. May 16, 2018 at 7:30 AM
    #3
    4X4Runner

    4X4Runner Moderator Staff Member

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    Mad driver mod. OME Suspension. 285/70R17 BFG AT KO2
    36 here
     
  4. May 17, 2018 at 6:38 AM
    #4
    Oobaa47

    Oobaa47 [OP] New Member

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    cool thx...I've been running at 33 psi, but I think I'm going to go up a little and see how it feels..
     
  5. May 17, 2018 at 9:31 AM
    #5
    P226Navy

    P226Navy 2016 T4R

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    36 is perfect. This would increase mileage per gallon.
     
  6. May 17, 2018 at 1:09 PM
    #6
    Backslider

    Backslider Gun Nerd

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    Spent all my gun money. =(
    What load rating?
     
  7. May 17, 2018 at 3:42 PM
    #7
    Oobaa47

    Oobaa47 [OP] New Member

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    I have the 285/70/17 falken wildpeak at3 P, 117 load rating
     
  8. May 17, 2018 at 3:50 PM
    #8
    Backslider

    Backslider Gun Nerd

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    Are they E rated?
     
  9. May 17, 2018 at 4:05 PM
    #9
    Oobaa47

    Oobaa47 [OP] New Member

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    P related....the lightest ones...I think they're 51 lbs a piece if I remember correctly....
     
  10. May 17, 2018 at 7:32 PM
    #10
    Backslider

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    If the max air pressure is 50 or 51 PSI, you have a C load range tire.

    You are probably best going with the same air pressure recommended on the sticker in your driver's side door, but you could get away with a couple lbs extra. 33-36 PSI is probably pretty good for those tires.

    To find out what's best regarding wear, you should perform a chalk test.

    Say thanks to @csuviper - this is his how to!
     
  11. Jun 5, 2018 at 7:20 AM
    #11
    Oobaa47

    Oobaa47 [OP] New Member

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    I meant they weigh approx 51lbs a piece..... coincidentally on the sidewall it says max air pressure is 51 psi.....but it definitely says P285 there too so I presume they are P load which is the passenger rated?
     
  12. Jun 5, 2018 at 8:03 AM
    #12
    jgcaps

    jgcaps Lovin the Colorado Life.!

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    3" Icon Stage 2, 18x9 Fuel Beast wheels, 285/65/18 BFG KO2's, N-FAB Black Rock Rails w/removable steps.
    trying out 38 front 36 back...
     
  13. Jun 5, 2018 at 6:02 PM
    #13
    SlvrSlug

    SlvrSlug New Member

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    I am running the Falken Wildpeak M/Ts, in the 285/70/17 E load at 44 front 38 rear. This may be the sweet spot for me, i have been adjusting the pressure the last couple weeks.
     
  14. Jul 28, 2018 at 1:26 PM
    #14
    eaglescout

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    FN FX PRo Wheels Matte Dark Bronze Nitto Ridge Grappler 285/70/17/load C 3" Dobinson Coil Lift Blackout Kit Raptor Style Grill LED C4 Fab Lo Pro Winch Bumper LFD Offroad Skid Plate
    I just put 285/70/17 Nitto Ridge Grapplers on, and the tire shop set them at 40 psi. Thanks for the chalk test! I will be trying this this weekend. Oh yeah, they are load range C.
     
  15. Jul 28, 2018 at 6:33 PM
    #15
    ckon

    ckon New Member

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    Tinted front windows | Hard-wired radar detecter | Heritage grille | Bumper, wheelwell and mudflap mod | 285/70 Nitto Grapplers | Plasti-Dipped valances, rack rails and logos | Replace all interior lamps w/LEDs | XenonDepot HIDs | Salex console and glove box organizers | RCI aluminum skid plate | Sprint Booster | Bilstein 5100 Shocks - Leveled @ .85 |
    I've set mine back down to 32 in hopes of keeping the rear end in place when going around corners and accelerating cuz it can get a bit loose.
     
  16. Jul 31, 2018 at 2:14 PM
    #16
    Pelfreybilt

    Pelfreybilt Pelfreybilt Off-Road, Inc.

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    It is very much dependent on the tire brand/type/rating and weight of the vehicle as well. We run many different PSI's here at the shop depending on the rig. Our second Gen Tacoma is running 315/75R16 Falken MT01's and runs at 40F/38R PSI as this has been the best wear PSI we have found for it at its normal weight (when loaded rear goes up a few PSI). This is more than the same truck running the 315/75R16 MTR's with Kevlar and even more still than the truck running 285/75R16 Falken AT's. It will vary from rig to rig unless you weight exactly the same and are running the same tire with the same alignment.
     
    eaglescout and SlvrSlug like this.
  17. Aug 4, 2018 at 11:00 AM
    #17
    szuyung3000

    szuyung3000 New Member

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    the TRD wheel is 17x7" and 285/70R17 calls for at least rim minimum width of 7.5"
    I know lot of people do that, it is safe correct?
     
  18. Aug 4, 2018 at 11:02 AM
    #18
    szuyung3000

    szuyung3000 New Member

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    P is Passenger rated. LT means Light Truck, biffier tires and thicker sidewall and deeper treads.
     
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