Trying out the new tires on Indian Cyn - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 11 Old 09-14-2008, 06:09 PM Thread Starter
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Trying out the new tires on Indian Cyn

Checking out the Rubi's new tires on Indian Canyon Saturday:




















~Richard & The Goddess~
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Current Mods: 2.5 BB Teraflex Lift, 35" Nittos, 16"X8" MB Wheels, On-Board Air, Flo Master Exhaust, Power Inverter (800w), Evap Canister Relocation, WOODS S. S. relocation bracket, WOODS Rear Axle, Mopar Hitch, CB, Happy Bunny mud flaps!
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post #2 of 11 Old 09-16-2008, 04:38 PM
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How are the new tires workin for ya? they look like they fill the wheel wells out a little better than the old ones

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post #3 of 11 Old 09-16-2008, 05:54 PM
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Looks really good! I like those rims!

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Hi Tread MT 37x12.50x16.5 $150 ea!
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post #4 of 11 Old 09-16-2008, 07:25 PM Thread Starter
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Quote:
Originally Posted by afoulk View Post
How are the new tires workin for ya? they look like they fill the wheel wells out a little better than the old ones
It drove like a super, big pile of CRAP when we put in the manufacture recommended 50psi, however due to my endless, pantywaist-whining Richard took some air out and we're now running them at 30psi and they drive very, very nice now!!! I'm happy and not whining anymore....so now I won't end up in a ditch on my way down the mountain

~Richard & The Goddess~
_______________________________________________
Current Mods: 2.5 BB Teraflex Lift, 35" Nittos, 16"X8" MB Wheels, On-Board Air, Flo Master Exhaust, Power Inverter (800w), Evap Canister Relocation, WOODS S. S. relocation bracket, WOODS Rear Axle, Mopar Hitch, CB, Happy Bunny mud flaps!
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post #5 of 11 Old 09-16-2008, 07:30 PM Thread Starter
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Quote:
Originally Posted by 100dollarman View Post
Looks really good! I like those rims!
I finally got some shiny!!!

~Richard & The Goddess~
_______________________________________________
Current Mods: 2.5 BB Teraflex Lift, 35" Nittos, 16"X8" MB Wheels, On-Board Air, Flo Master Exhaust, Power Inverter (800w), Evap Canister Relocation, WOODS S. S. relocation bracket, WOODS Rear Axle, Mopar Hitch, CB, Happy Bunny mud flaps!
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post #6 of 11 Old 11-14-2008, 08:12 AM
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Quote:
Originally Posted by so_calif_rubi View Post
It drove like a super, big pile of CRAP when we put in the manufacture recommended 50psi, however due to my endless, pantywaist-whining Richard took some air out and we're now running them at 30psi and they drive very, very nice now!!! I'm happy and not whining anymore....so now I won't end up in a ditch on my way down the mountain

LOL

The MANUFACTURER DOESN'T RECOMMEND 50 PSI.



That's the MAXIMUM rated pressure, NOT the "recommended" pressure.

The tire maker just has no way of knowing what truck the tire may end up on...a suzuki samuri or a super duty, etc....all take DIFFERENT PSI.

Take the LOAD RATING that goes with that MAX psi on the sidewall...that's what 50 psi can support safely.

Now, take the total loaded weight of YOUR rig, divide by 4 if evenly distributed....that's roughly the psi you NEED to support as you tool along.

Typically add ~ 35% - 40% to that weight, to account for braking and handling load transfer, personal preferences in control vs softness, etc....and, compare THAT weight to your sidewall MAX rating.

That Weight/MAX Load = correct psi/MAX psi

So, if -

the tire is rated to support ~ 3,195 lb at 50 psi (A typical load range)

Your JK has a GVWR of ~ 5,500 lb

That means ~ 1,375 lb per corner, + 35% - 40% = ~ 1,788 lb to 1,925 lb load target

50 psi/3,195 lb = NEW PSI/1,925 lb

New PSI = ~ 28 psi to 30 psi range. (What you found by experimentation)



That's not infallible, as tire loading is not perfectly linear, but, it typically gets you into the ball park quickly.

- TEEJ

2008 JK 4 Dr X. 5 Speed, LSD, JKS QD, 3.73 Diffs. Husky Liners and Daystar Hood Wranglers. Pine Stripes.

Last edited by TEEJ; 11-14-2008 at 08:32 AM.
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post #7 of 11 Old 11-14-2008, 11:57 AM
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Question Looks Good

Those look really good. Does it rub anywhere? This is still on the 2.5" Lift?

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post #8 of 11 Old 11-14-2008, 09:55 PM Thread Starter
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no rubbing,and yes still 2.5' bb still in

~Richard & The Goddess~
_______________________________________________
Current Mods: 2.5 BB Teraflex Lift, 35" Nittos, 16"X8" MB Wheels, On-Board Air, Flo Master Exhaust, Power Inverter (800w), Evap Canister Relocation, WOODS S. S. relocation bracket, WOODS Rear Axle, Mopar Hitch, CB, Happy Bunny mud flaps!
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post #9 of 11 Old 11-14-2008, 09:57 PM Thread Starter
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ty Teej.good info

~Richard & The Goddess~
_______________________________________________
Current Mods: 2.5 BB Teraflex Lift, 35" Nittos, 16"X8" MB Wheels, On-Board Air, Flo Master Exhaust, Power Inverter (800w), Evap Canister Relocation, WOODS S. S. relocation bracket, WOODS Rear Axle, Mopar Hitch, CB, Happy Bunny mud flaps!
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post #10 of 11 Old 11-21-2008, 04:47 PM
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TEEJ, did you engineer wheels and tires in another life? You know more about rims and tires than all of the 15+tire sales people I have talked to in the last two months combined!

American, Gun owning, God fear'n, Veteran, and I'm offended that you're offended.
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post #11 of 11 Old 11-21-2008, 09:05 PM
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Quote:
Originally Posted by homesickmarine View Post
TEEJ, did you engineer wheels and tires in another life? You know more about rims and tires than all of the 15+tire sales people I have talked to in the last two months combined!
Thanks!



It was this life though.

- TEEJ

2008 JK 4 Dr X. 5 Speed, LSD, JKS QD, 3.73 Diffs. Husky Liners and Daystar Hood Wranglers. Pine Stripes.
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