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  #61  
Old 02-21-2013, 06:39 PM
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When I look online for the recommended pressure for my tires(Dunlop Radial Rover A/T's), all it states is a max pressure-not a specific one. And it's like 80psi, recommended should be somewhere in the 30s.
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  #62  
Old 02-21-2013, 07:55 PM
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This is why its a can of worms...the oem tires probably had a max pressure of 42-44 psi they were a load range "d" tire most likely. You have upgraded to a load range "d" tire requiring higher pressures than oem. I say requiring not capable of handling because its all about the sidewall. A load range "e" tire will have a stiffer sidewall than a "d" thus being less "rounded" properly by lower pressures. Proper inflation is a balance between treadlife, traction, performance, and fuel economy. The best way to determine actual proper inflation is to weigh each corner of the vehicle and refer to the manufacturers recommendation for that load. Often times they will have charts showing inflation at different loads. I promise you if you are running your "80 psi max" tire at 32 psi on the highway at speed you are shortening its life,wasting gas, and potentially endangering your life as well as the lives of others. I don't mean to sound "preachy" but there are so many people that just accept what that sticker on the door says is gospel and applicable to every tire and situation...if that's the case why does my door sticker say tire size is 265 70r 17 ? When from the factory it shipped with 245 70r 16 and in 2002 you couldn't even option a 17" wheel on a WJ from what I can see.

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Old 02-21-2013, 08:41 PM
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I'm still a little confused(remember I'm 16 and have next to no car experience). Firstly, I know my tires aren't stock-they are the same size as stock(ofcourse) but are rated as E load tires-so were the originals D? So if they are E, they have stiffer side walls, and presumably are made of thicker rubber. So they should be higher than what Jeep is telling me to fill them up to.

I'd love to understand this-but first things first-I should get my tires to the proper pressure. Once I do that, I'll try and understand this whole system better. Anyone know around what I should have the tires at? ~40 psi?
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Old 02-21-2013, 09:31 PM
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Yes more air than the door sticker says. A safe place to start is to look at what the sticker says your front/rear load rating is. Use the maximum number (weight) listed. Take that number and compare it to the chart from the tire manufacturer for listed load (weight) and inflate to that.

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Old 02-21-2013, 09:36 PM
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Re: Can't get my wj outta 4lo?

Quote:
Originally Posted by Hacksaw View Post
Yes more air than the door sticker says. A safe place to start is to look at what the sticker says your front/rear load rating is. Use the maximum number (weight) listed. Take that number and compare it to the chart from the tire manufacturer for listed load (weight) and inflate to that.

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My tires appear to be discontinued...hmm.
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Old 02-21-2013, 10:02 PM
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Re: Can't get my wj outta 4lo?

Ok so according to consumer research, the max cold pressure is 44 psi.
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Old 02-21-2013, 10:33 PM
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Run em 44

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Old 02-21-2013, 10:34 PM
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Re: Can't get my wj outta 4lo?

Take that back, that was for the passenger rated "P", they are LT rated to 80 psi. Still run at 44 psi?

I know, I'm an annoying little teenager.
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Old 02-21-2013, 11:03 PM
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P are passenger car lt are light truck ...what tires you running ?

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Old 02-21-2013, 11:19 PM
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Quote:
Originally Posted by Hacksaw View Post
P are passenger car lt are light truck ...what tires you running ?

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Light truck.
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Old 02-22-2013, 06:23 AM
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Re: Can't get my wj outta 4lo?

found this
Dunlop Tires | Care & Maintenance | Proper Inflation

pulled this off jeep forum
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Hint: Call the regional representative for the tire manufacturer and ask a few questions about your specific setup and vehicle. Those guys see hundreds and hundreds of problems and they can be very, very helpful. In my case, I didn;t have enough experience with my specific type of tire, but the regional rep had seen people do just about everything with them. They're to tires, what JF.com is to Jeeps. A great repository of experience/knowledge.
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and the whole thread here
Chalk test?? I'm not driving at 16 PSI!!! - JeepForum.com
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Old 02-22-2013, 09:12 AM
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Ok so light truck what ? Goodyear,Michelin ? What brand and model.? I can pretty much guarantee they aren't the originals...
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