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DRW Tire Pressure

cycling4life

cycling4life

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Currently running cold tire pressures below when and was wondering how low would you go based on the unloaded scaled weight and Nexen inflation chart tables. This is with just me and wife in the truck with full tank of gas and a few items on the bed. I typically run door sticker PSI when towing my trailer.

Front: 75psi
Rear: 50psi

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Image 9-3-21 at 10.50 AM.jpg
 
been running 65 in frt and 45 in rear empty,55 in rear when towing 18000 lb 5th wheel. tires wear real even and tire temps are good no problems for 5 years
 
I run 40 unloaded. Makes a HUGE difference in the ride. I run the door sticker as I am at max payload when towing the fiver.
 
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CdnHO said:
I run 40 unloaded. Makes a HUGE difference in the ride. I run the door sticker as I am at max payload when towing the fiver.
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Anything to watch for like the tire bead unseating from the rim?
 
cycling4life said:
Anything to watch for like the tire bead unseating from the rim?
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Certainly not unloaded. My 2003 dually had the same size tires and I ran 40 psi 90% of the time. The tire manual that came with the truck new called for 40 unloaded. Never a problem. At 65 psi unloaded you will wear your tires in the center.
 
Im running 42 psi in the rears loaded and unloaded. Fronts I keep at 70. My 5er is 14k loaded down. No issues.
 
bump as this is good info for us DRW guys/gals to know.

I'm currently running 70 front and 65 rear and will tow my 17k 5er this weekend for the first time. Need to crack open the manual and see if it still says 40 psi unloaded for 2022 models - seems like it would ride slightly better at a lower setting.
 
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CFE said:
bump as this is good info for us DRW guys/gals to know.

I'm currently running 70 front and 65 rear and will tow my 17k 5er this weekend for the first time. Need to crack open the manual and see if it still says 40 psi unloaded for 2022 models - seems like it would ride slightly better at a lower setting.
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The manual and door sticker show the PSI when the truck is fully loaded at max weight. And what the lawyers say they have to show.

Most informed people look at the weight of the truck as they normally drive it, then look up the tire manufactures site to see what pressures to run. And watch the tire contact patch and wear of the tire to make sure it is not over/under inflated.

You will find out that you can run the tires at a lot lower pressure than the manual/sticker say. Makes for a more comfortable ride as well.

Not a DRW, but my Power Wagon with stock tires and even lowering the pressure down to the lower TPMS limit of 50 PSI, the outer edge of the tread was still about 1/2 inch or more off the ground.
With my new BFG tires and resetting the threshold of the TPMS so I don't get the alarm, I run 45/37 in mine. Tread contact patch looks good and she rides real nice. I may go another 3 to 5 PSI lower in the near future.
 
Doesn't take much on a dually to carry the rated load so running lower pressure to improve ride is pretty popular. One thing to keep in mind though, if you run commercial you have to maintain at least 50% of max rated psi as listed on the tire sidewall or you could be cited for a "flat tire" by the DOT in an inspection. Been there. Everything was fine but I had a "flat tire." Speaking the the States, anyway, not sure about up North.
 
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Blythkd1 said:
Doesn't take much on a dually to carry the rated load so running lower pressure to improve ride is pretty popular. One thing to keep in mind though, if you run commercial you have to maintain at least 50% of max rated psi as listed on the tire sidewall or you could be cited for a "flat tire" by the DOT in an inspection. Been there. Everything was fine but I had a "flat tire." Speaking the the States, anyway, not sure about up North.
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Never heard of that. :eek:
In Kommieforina, all trucks are considered Commercial. Just there way to get more money out of us.
 
CFE said:
Yea, that's definitely a money grab by the state...no need to label all HDs commercial.
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It's all trucks, not just HD's. My 1500 and even my little Toyota Tacoma were tagged as commercial. Had to have them weighed and then you pay a weight fee.

Only way around it is to permanently install a camper shell. Then go thru the paperwork hassle to get registered as non commercial. But you cant ever haul anything or put anything in the bed. If you do, they can ticket you. And if you pull the shell off and don't change it back, they can ticket you.
The plates have a different numbering system between commercial truck and "domestic" truck.

1 more year and I'm out of here.
 
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