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 Post subject: Tire pressure
PostPosted: Wed Dec 24, 2008 2:18 pm 
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Location: Sarnia area, Ontario, Canada
Question, problay been ansewered a dozen times but now that I am running 245/70's vs. stock 235/70, how do I know what proper inflation is? I assume the recommended 33 PSI for the OEM's doesn't apply, any suggestions? Thanks.

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PostPosted: Wed Dec 24, 2008 2:26 pm 
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Back in the day I ran my 245-70s at about 35 lbs, had the Firestone Destination ATs and thats where they wore the best at and rode good

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 Post subject:
PostPosted: Wed Dec 24, 2008 3:13 pm 
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245/70 r 16s on my KJ, studded winter tires. Got them set at 38 lbs. and that seems to be a good pressure.


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 Post subject:
PostPosted: Wed Dec 24, 2008 3:29 pm 
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I usually run 37 in mine. That's where I get even wear.

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 Post subject:
PostPosted: Wed Dec 24, 2008 4:06 pm 
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Chalk the tires and then drive forward a bit.

Check the pavement where the tire left the chalk.

A solid chalk line across the entire tread = good tire pressure

A line on the shoulders = under inflated

A line only in the middle of the tread = over inflated.

I run around 38PSI [COLD] on my stock sized tires which returned the best amount of ride / contact and all that other stuff..

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 Post subject:
PostPosted: Wed Dec 24, 2008 5:27 pm 
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sleeve84028 wrote:
Chalk the tires and then drive forward a bit.

Check the pavement where the tire left the chalk.

A solid chalk line across the entire tread = good tire pressure

A line on the shoulders = under inflated

A line only in the middle of the tread = over inflated.

I run around 38PSI [COLD] on my stock sized tires which returned the best amount of ride / contact and all that other stuff..


Exactly the process I use to determine a proper PSI. I do this after each rotation and alignments.

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06 KJ Sport
-245/75/16 Destination A/T's
-Debadged and decaled
-Liberator door handles


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 Post subject:
PostPosted: Fri Dec 26, 2008 3:35 pm 
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Location: Sarnia area, Ontario, Canada
Thanks folks....right now I'm around 36 PSI and w/ it being winter I'll have to wait until the un-thaw before I can try this chalk test. I just knew 33 PSi seemed to low when I first had them on. Thanks again.

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2005 KJ Sport 3.7L, select-trac, trac-lok, K&N air, Mopar skids, 245/70R16 GY Wrangler Silent Armours, Draw-Tite Class III Max-Frame Hitch Receiver, PIAA Xtreme White Plus bulbs. Built: 08/04.
Exhaust, lift, rims painted black, Duralined, roof basket, and Renny light bar to come!
http://www.cardomain.com/ride/2305866
L.O.S.T. Member# 173501


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