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Old 10-17-2013, 11:02 PM
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Help me regarding tire pressure

Hi all! I just bought a new custom converted rubicon with LT305/70r17 tires. The tpms light is on so dealership checked pressure and put it at 46psi. This seems high for every day use and I heard I should be at 33-35 psi.

Also I'm thinking they did not calibrate the tpms to adjust for the bigger tire. Any advice would help.
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Old 10-25-2013, 03:46 PM   #2
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What is the maximum tire pressure recommended for that tire?? It's listed on the sidewall. 46psi seems too high and they may be overinflated. Tire size shouldn't have any bearing on the TPMS...just the tire pressure. I think that 46psi would bang the hell out of your suspension and steering mechanicals.
Did the TPMS light go out after the dealer upped the pressure?? If so, then drop the pressure a couple of pounds at a time and drive for 15 or 20 minutes or so, and keep doing this till the light comes back on. Then give the tires a pound or two more air.

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Old 11-03-2013, 12:29 AM
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It say 50 max on the tire. The tpms was on for there was a bad sensor. So they checked all sensor and rebalanced and light is off. Now if I lower the pressure light will come back on. Thanks for the advice
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Old 11-03-2013, 02:30 AM   #4
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I switched the Bridgestone OEM tires on my Sahara Unlimited to a Goodyear tire, same size. But the OEM tire had a max of 44 psi and the new tire a max of 51 psi.

So I asked Goodyear what I should keep the tires at since there was a difference in the suggested max psi. This is the response from the Goodyear rep.

Operating air pressure is determined by the vehicle manufacturer.

If you're using the same size tire that came as original equipment on your
vehicle, the proper air pressure is indicated on the door placard or owners
manual of your vehicle.

The air pressure indicated on the sidewall of each tire is the inflation
pressure required to carry the maximum allowable load for that tire.

Vehicle manufacturers have invested considerable time and testing to
establish an air pressure that will provide a smooth comfortable ride in
addition to an even treadwear pattern.

Our recommendation would be to stick with the air pressure established by
your vehicle manufacturer.

Thank you for your inquiry through our web site.
Granted this is for a same size replacement. You could always ask the question of the manufacturer of the tires you have like I did.


“Life is not a journey to the grave with intentions of arriving safely in a pretty well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming ... WOW! What a ride!”
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Old 11-03-2013, 04:10 PM   #5
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34psi mileage 28-30psi traction
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