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I think Squatchy was referring to TPMS sensitivity. And I agree with him. I run 34/35 psi and it's not until the mid to medium high twenties that my TPMS comes on.

Ted
 

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I had to go back and see what you guys were talking about. I see the post you and @squatchy are talking about Ted @xPosTech ' I was referring to squatchy's previous post where he give pressure ranges for different applications. Anyway all is good.

There must be different values on those sensors, like you guys, mine alets around 26 lbs.

The 10 ply guys running 55 psi, must have sensors that trip a lot higher than my 26 psi
 

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I had to go back and see what you guys were talking about. I see the post you and @squatchy are talking about Ted @xPosTech ' I was referring to squatchy's previous post where he give pressure ranges for different applications. Anyway all is good.

There must be different values on those sensors, like you guys, mine alets around 26 lbs.

The 10 ply guys running 55 psi, must have sensors that trip a lot higher than my 26 psi
Ah. No that was for his application. If his tires are rated 55 and he’s running 35 then he’s likely well under what the tires are made to run at, and he’ll have the wear patterns to show it. Door sticker is really only relevant to the stock tire.
 

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I think the newer the TPMS system, the smarter they get. My car doesn't alert to high or low as much as it does to inconsistent pressures between the tires. As for the right pressure, I adjust my pressure according to the ride I want, load, and terrain. Once upon a time I played with pressures and watched MPG, but couldn't say one way or the other if it helped or hurt. Just remember most tire failures occur from improper inflation/load relationship. Lower pressure = higher temp and eventual catastrophic tire failure.
 

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The higher the pressure the higher the miles per gallon. The lower the pressure the higher the chance of failure. Soccer moms liked the softer smoother ride of underinflated tires on their suvs. TPMS is a direct result of the suv rollovers that resulted from the underinflated tires.

Ted
 

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The higher the pressure the higher the miles per gallon. The lower the pressure the higher the chance of failure. Soccer moms liked the softer smoother ride of underinflated tires on their suvs. TPMS is a direct result of the suv rollovers that resulted from the underinflated tires.

Ted
And Piss Poor driving... But hey...
 
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You need to experiment some with the tires on your Tahoe. The dealer will always fill the tires to what the door stickers says. the door sticker is for the make and model of tires that were on the car when it shipped from the factory. As soon as you put on a different tire, the door sticker pressure is only good as a starting point. What will determine the best pressure for you will take some playing around with pressure on your part. Too little pressure and your gas mileage will suffer and you will run the risk of a blow out, and have less weight carrying capability, but the ride will be a lot smoother. Never run more than the max pressure on the sidewall of the tire, but running a higher pressure will give a bit harsher of a ride, but you will get better gas mileage, longer tire life, and better traction is some conditions, and more weight carrying capability.
 
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