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PSI question

Discussion in 'Wheels & Tires' started by tacosupreme54, Jun 30, 2011.

  1. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    I have a couple of quick questions. I just got a set of 295/75/16 hankook mt's. Their max psi is 65. Discount tire installed all four of them at about 35 psi, but they look a little low to me. I know keeping them too low will also wear them out quicker. Higher psi will give slightly better gas mileage. But inflating them too high will make them ride pretty rough and make them easier to puncture. So what in your opinion and from experience is the best psi to run for these with a 65 psi max? maybe 50 psi? or around 40 psi?

    Also another quick question: what effect will cutting my exhaust behind the axle have? I have a 14" magnaflow muffler, but my tip is just getting rusty and I'd like the cleaner look without it. Will it make the sound any/much different? Also, will it hurt anything like the spare tire or need another hanger to support it?


    Thanks in advance guys
     
  2. fireturk41

    fireturk41 I like to break shit!

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    id fill it to 40-45, remember air heats up as a tire rolls and increases psi, my taco is filled to 35. plus it depends on your avg load range, ex my doally has load range fs filled to 95
     
  3. Ez2typethis

    Ez2typethis Well-Known Member

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    My 2010 4x4 TRD sport: Bilstein 5100's in the front set at 1.5" to level, TRD Supercharger, TRD Cat back, TRS retrofit, Satoshi grill, Redlinetuning hood struts, Socked

    You could probably run those tires around 35-40 psi and be good. 65 psi is too high IMO tho.

    Cutting the tail pipe will make it louder slightly and would probably not have any other adverse effects.
     
  4. Tacomanator

    Tacomanator Boiling denim and bangin whores

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    Chalk line test
     
  5. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    alright, i rarely haul anything. every so often i will load up the fourwheeler in the bed or a couple on a trailer, but that's not often. so 40, maybe 45 psi for daily driving with no load? and do you guys think i will need to re-support my exhaust after cutting it? and is a sawzall with a metal blade gonna do alright on cutting that?
     
  6. BMOC

    BMOC Well-Known Member

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    x2 chalk line test, as for the exhaust dump, i had no noise difference when chopping my stock one, can't imagine it being much different with yours.
     
  7. OZ-T

    OZ-T All of those moments....will be lost.....in time

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    Hankook Dynapro MT's have a max inflation of 80 lbs
     
  8. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    these 295s have a max of 65
     
  9. OZ-T

    OZ-T All of those moments....will be lost.....in time

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    Odd
     
  10. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    yeah, most of the typical sizes for that tire have 80 psi max, but idk. what psi do you suggest oz-t?
     
  11. OZ-T

    OZ-T All of those moments....will be lost.....in time

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    Not that I was doubting you , but the Max PSI does drop to 65 at the 295's per Hankook's website

    I did the chalk test on my 265/70/17 MT's and have them at 34
     
  12. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    do you run that same pressure on all four? why do some people run a lower pressure on the rear? because there is less weight in an empty truck bed?
     
  13. OZ-T

    OZ-T All of those moments....will be lost.....in time

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    I have a commercial cap on my truck and I carry tools a lot .

    If the bed was empty all the time I would probably run the rear a couple pounds lower
     
  14. tacosupreme54

    tacosupreme54 [OP] Well-Known Member

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    excellent. thanks guys.
     
  15. Rellik01

    Rellik01 Well-Known Member

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    The MFG suggested inflation on my 2011 TRD Sport is 29 lbs. front and rear for stock size tires. That seems awfully low. What would you all suggest for stock size tires?
     
  16. Pakow

    Pakow Well-Known Member

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    I cut mine with a hacksaw in about two minutes, a sawzall should do the trick in a matter of seconds.

    No additional support added for the exhaust and it does just fine.

    Oh, and chalk test for the tires.
     
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