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Thread: Tire Pressure
08-27-2009, 08:48 AM #1
I have a question about tire pressures. I have a 2007 silverado with P275/55 R20 tires. In the door frame it says to run at 30psi.
When I picked the truck up (new to me) last week the dealer had filled to 38 psi. I tried lowering to 30 psi but the tires looked low when I did. The tire pressure gauge agrees with the DIC so I'm sure it's accurate.
Question should I run at 30 psi in spite of the way it looks.
08-27-2009, 09:21 AM #2
This seems to be very common. My '04 Silverado has 265/75R16 tires with a sidewall rating of 44psi. The door post label says 36psi. When I received my truck they had split the difference and put 40psi in the tires.
Rumor has it that the Firestone fiasco a few years back was actually caused by Ford listing an inflation recommendation that was too low for the tires causing sidewall fatigue and the blow-outs. Somehow Firestone still took the fall.
I would be interested to hear an "expert" from one of the manufacturers explain this discrepency.John
'04 K1500 Silverado Z71
'93 C1500 Silverado
08-27-2009, 09:23 AM #3
I would probably put it back to what ever the dealer had it at. the lowest I would go would be 35 though.2010 Equinox LT
2.4, 6 speed auto, power lift gate, remote start, bluetooth, xm.
1995 Cheyenne C1500 ext. cab(my baby, my first truck)
5.0, 5 speed, Silverado appearance package, power nothing, bucket seats and console Silverado, painted black interior, eBay halo headlights, eBay chrome tails, eBay cai, dual Flowmaster 40's w/no cats, 15x7 American Racing Hopsters, Walmart fog lights, SS mirrors
10-08-2009, 09:01 PM #4
- Join Date
- Sep 2009
- Stafford, VA
I would put what ever the tire says to put in it .........The truck does not know what size tire is on it. Thats what I do It just makes since.
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