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Air pressure in tires


GlennWest

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100 steers, 95 drives.

2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift

Bed Build by "JW Morgan's Custom Welding"

2017 DRV 39DBRS3

2013 Smart Passion Coupe "Itty Bitty"

 

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100 steers, 90 drives per weight charts

Dennis & Nancy
Tucson, AZ in winter, on the road in summer.

1999 Volvo 610 "Bud" 425 HP Volvo, Super 10 spd.
2005 Mountain Aire 35 BLKS
2013 smart fortwo CityFlame riding on Bud
(Replaced '05 smart first loaded in '06

and '11 smart that gave it's life to save me!)
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100 on steers, 100 on drives, 100 on trailer tires. I like to keep it simple.

 

I have more air than I need in the drives according to the tire charts for my weight, but the others are where they need to be and the ride difference was not noticeable going up to 100 on the drives.

2000 Kenworth T2000 w/ Cummins N14 and autoshift
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105 in steers. And 85 in drives. Single axle

ditto . . . after Bill weighed us at ECR.

 

As you'd expect, steers load is highest with Smart loaded and unhitched and is within a few hundred lbs of axle rating. Drives are highest when hitched and has much more margin, though expect we'll erode that a bit. We hope to weigh again at Hutch with Trey and Susan and probably need to bump the drives to 90 after we finish loading up and getting set for full timing. Would like to get Crossfires for the drives but holding off just for this reason.

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Jim & Wilma

2006 Travel Supreme 36RLQSO

2009 Volvo VNL730, D13, I-shift, ET, Herrin Hauler bed, "Ruby"

2017 Smart

Class of 2017

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I was told by a tire installer to keep the steers above the 100psi mark or risk breraking the bead in slow turns. So I keep mine around 115 psi steers and around 90-95 psi for the drives.

Kevin

Is that 115 psi Canadian?;)

2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift

Bed Build by "JW Morgan's Custom Welding"

2017 DRV 39DBRS3

2013 Smart Passion Coupe "Itty Bitty"

 

"Don't go around saying the world owes you a living. The world owes you nothing. It was here first!"

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115 sounds way to high to me.

 

Personally steers @ 100psi, drives @ 85psi and trailer @90psi.

 

PSI for each axle position is based on actual weight and tire charts on my tires.

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