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Problems associated with 285s

Discussion in 'Wheels & Tires' started by Future55, May 31, 2011.

  1. May 31, 2011 at 6:47 PM
    #1
    Future55

    Future55 [OP] Well-Known Member

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    What's up fellas, I'm about to take the leap and buy new wheels and 285s. Ive done plenty of research and this may have been asked many times before, but I did do a search. I know that with 285s there will be a decrease in power and gas mileage, as well as rubbing, but is there anything else I need to be aware of? Drivetrain problems? Brake problems?

    Do you guys I'll rub with tc ucas and a ome lift (no top plate spacer)? I'm planning on getting 17" 7089s with duratracs so I guess 285/70/17.

    Thanks!
     
  2. May 31, 2011 at 6:52 PM
    #2
    bama trd

    bama trd Well-Known Member

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    I run 285's on my stock , rubs the UCA's at sharp turns , gonna go with some 1.25" spacers and a 3" lift is coming soon. As long as I'm light on the pedal ,I get good mileage , but I just got away from a Silverado Z71. Oh yeah front mud flaps have to go or trimmed , I know at stock height.

    028.jpg
     
  3. May 31, 2011 at 6:57 PM
    #3
    Future55

    Future55 [OP] Well-Known Member

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    Yea thanks, I forgot to mention that I also know about the speedo/odo potentially being off with 285s but any input is great.
     
  4. Jun 1, 2011 at 11:14 AM
    #4
    Future55

    Future55 [OP] Well-Known Member

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  5. Jun 1, 2011 at 11:18 AM
    #5
    krimson

    krimson Nothin

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    OME 3" lift with 885 coils. OME Shocks with TSB 1.5 AAL. 285/75/16 KM2s. XD Hoss 16" wheels. DDM Tuning 6000K HIDs, H10 6000K Fogs. BHLM. Debaged. 20% tint on front windows.
    Really no problems here. Im running 285/75/R16 KM2s with my OME 3" lift. I don't rub much, after i did some trimming... I also got new wheels with a 4.5 Back Spacing so i clear my UCA now... Im light on the Gas pedal and i do get decent gas mileage for 285s.. There's a little power decrease, the reason is because 285s are an E range tire.
     
  6. Jun 1, 2011 at 11:19 AM
    #6
    bjmoose

    bjmoose Bullwinkle J. Moose

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    285/70R17 will still require plastic wheelwell trimming and likely mudflap removal with an OME 3" lift and Tc UCAs.

    Cab mount chop may be required, YMMV.

    That said, it's a quite common tire size to run with that configuration, and works well.
     
  7. Jun 1, 2011 at 11:25 AM
    #7
    bjmoose

    bjmoose Bullwinkle J. Moose

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    Any time you lift, there's a chance of driveline vibrations and a small chance of vsc problems.

    Your ride will be stiffer and your gas mileage worse.
     
  8. Jun 1, 2011 at 11:34 AM
    #8
    Norcan

    Norcan What we don't have we make.

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    Yes your speedo will be off with 285/70/17's the over all side wall height is 1" more than stock so your total wheel height is changing 2".

    The easy way to know what the difference is going to be is to 285 X.70 = 199mm (yes that is that metric) Stock tires are 265/65/17 so that would be 265 X.65= 172mm

    I doubt you can find a 285/60/17 but if you can the speedo will be bang on. Tirerack did not list any but there is one tire 285/65/17 from yokohama that would be fairly good at 185mm

    Good luck!
     
  9. Jun 1, 2011 at 12:01 PM
    #9
    macgyver

    macgyver Well-Known Member

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    I run 285/70/17's Duratracs on OEM Tundra/Sequoia 17" Alloys. No wheel spacers.

    5100's @ 2.5 on stock coils up front. 2" AAL in back. I had to remove the front mudflaps and trim a little plastic. Occassionally I rub the cab mount and the SLIGHTLY rub the UCA when I'm offroad (i'm assuming from sidewall flex). I typically only rub at full lock when turning into a driveway or backing up at full lock.

    As far as Gas mileage...yeah it dropped a little bit. but I only lost 15-20 miles per tank which is about 1mpg.

    It seems a little more sluggish but because I drive a manual transmission i'm sure it would be a little more noticeable with an auto trans.
     
  10. Jun 1, 2011 at 12:39 PM
    #10
    Future55

    Future55 [OP] Well-Known Member

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    Thanks for all the help guys, i guess i just dont want to get myself into a situation where im gonna have to shell out tons of money to fix things.
     
  11. Jun 2, 2011 at 8:49 AM
    #11
    N8Dizzle

    N8Dizzle Active Member

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    Did you use the top plate spacer for the full 3"? I'm looking at getting the OME kit but would like to keep out the spacer until I can afford new UCA's. I don't know enough to know if that spacer will increase alignment issues or whether the entire lift is already out of stock adjustment spec's.
     
  12. Jun 2, 2011 at 8:56 AM
    #12
    krimson

    krimson Nothin

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    I didn't get the top plate spacer. I got around 2.5 of lift, I'm not 100% how much, because i didn't measure it. If I were you just get the 885s if you have a DC, the top plates are unnecessary till the coils start to sag considerably. I got stock UCA's and no issues here with alignment.
     
  13. Jun 2, 2011 at 9:03 AM
    #13
    T@co_Pr3runn3r

    T@co_Pr3runn3r XXXXXXXXXXXXXXXXXXX

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    32" OD tires made my speedo dead on with GPS.
     
  14. Jun 2, 2011 at 9:03 AM
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    N8Dizzle

    N8Dizzle Active Member

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    Thank you sir. You just made my day, a whole lot better.
     
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