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04-06-2021, 10:10 PM
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#1
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3 Rivet Member
2021 25' Globetrotter
Kinnelon
, New Jersey
Join Date: Aug 2020
Posts: 143
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TV Tire Pressure
Hi - I have a 2018 Suburban Premier. Tires on the truck show max cold pressure of 44. Recommended tire pressure per Chevy is 35 (per the door sticker). When towing, is it advisable to go to the max cold on the tires? Seems like max cold pressure is required to achieve max load capacity on tires. Thanks
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04-06-2021, 10:15 PM
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#2
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Rivet Master
2017 25' International
West Lake Hills
, Texas
Join Date: Dec 2020
Posts: 1,644
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What is the load on the tires?
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04-07-2021, 05:04 AM
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#3
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CapriRacer
I'm in the
, US
Join Date: Sep 2012
Posts: 991
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Quote:
Originally Posted by Jason P M
Hi - I have a 2018 Suburban Premier. Tires on the truck show max cold pressure of 44. Recommended tire pressure per Chevy is 35 (per the door sticker). When towing, is it advisable to go to the max cold on the tires? Seems like max cold pressure is required to achieve max load capacity on tires. Thanks
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The load carrying capacity maxes out at 35 psi for SL Passenger car tires. You can go as high as the max pressure, but it isn't needed. However, some folks like the way more pressure feels.
__________________
CapriRacer
Want to learn about tires? Please visit my website: Barry's Tire Tech New content every month!
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04-07-2021, 05:46 AM
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#4
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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^
X2
As noted above the Suburban is no longer a 'truck'.
When its time consider LT tires, a better option when loaded and towing.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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04-07-2021, 06:22 AM
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#5
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Rivet Master
1977 31' Sovereign
Rochester
, WASHINGTON
Join Date: Sep 2020
Posts: 631
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Going by a door sticker has no reflection what the actual tires are on any vehicle.Its a guideline.
Go with what's on the sidewall of the tires.Dont underinflate tires used for towing.Put Cold pressure in them.
Above info is good, about LT ( Light Truck) tires, on tow vehicles.
__________________
Airstream rodeo clown, it's my turn in the barrel 🤡
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04-08-2021, 05:55 AM
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#6
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CapriRacer
I'm in the
, US
Join Date: Sep 2012
Posts: 991
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Quote:
Originally Posted by B. Cole
........ Go with what's on the sidewall of the tires. .......
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That's totally wrong. What's on the sidewall of a tire is a MAXIMUM, not a recommendation.
Imagine trying to inflate a tire to 80 psi, where the placard calls for 50 - it's that kind of wrong.
__________________
CapriRacer
Want to learn about tires? Please visit my website: Barry's Tire Tech New content every month!
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04-08-2021, 06:19 AM
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#7
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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So during my time at GM, I asked a tire and wheel engineer this very question.
1) The door sticker is not just a suggestion, guessing which tire is used. There is extensive testing done with the vehicle and the SPECIFIC tire used as OEM. That particular brand and model is assigned a TPC spec. It is essential, in order to maintain the outcomes predicted by the testing of the vehicle that replacement tires meet or exceed the OEM TPC.
2) I was told that the door placard pressures are assigned at full GVW for the vehicle, and there is no recommendation to run a higher pressure.....unless you are exceeding GAWR or GVWR. (And that is not a thing to do!!)
3) reducing pressure while travelling with an "empty" vehicle is at your discretion. I never do.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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04-08-2021, 07:55 AM
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#8
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3 Rivet Member
2006 25' Safari FB SE
Phoenix
, Arizona
Join Date: Oct 2018
Posts: 155
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Passenger car tires are full load rated at the door sticker. LT (Light Truck), besides being more durable, are load rated by pressure. The manufacturer will have a load rating vs pressure guide on their web site. There are also web sites that will give the equal pressure for a LT to reach an equivalent passenger tire load. I just went through this with my passenger (suv) tired Ram 1500 that Forest Service roads tore up last summer. I replaced them with same size LT running the pressure to get an equal load.
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04-08-2021, 08:35 AM
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#9
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Rivet Master
2017 26' Flying Cloud
Tampa
, Florida
Join Date: Feb 2017
Posts: 7,656
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My door sticker says 35 psi.
I've bumped it up to 44 for towing once and I've left it at 35 towing.
I couldn't tell any difference.
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04-08-2021, 08:55 AM
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#10
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Rivet Master
2014 27' Flying Cloud
Viera
, Florida
Join Date: Oct 2006
Posts: 1,296
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Ditto what many are saying here. My F-150 Platinum door sticker says 35 psi, and that is for the full GVWR load. Going up to the tire sidewall maximum, 44 psi, isn't required for maximum load. On my previous F-150, it looked like I was getting excessive edge wear on the tires at 35 psi, so I started towing at 40 psi and that seems to make a difference.
Randy
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Randy & Pat Godfrey
Florida Airstream Club (027)
ACI# 1212 - AIR# 17017
2014 27FB Flying Cloud - SilverCabin II
2018 F-150 Platinum - unnamed
The best part of any trip is when you pull away from home.
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04-08-2021, 09:10 AM
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#11
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by Mollysdad
My door sticker says 35 psi.
I've bumped it up to 44 for towing once and I've left it at 35 towing.
I couldn't tell any difference.
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Normal...
In my experience TP makes little difference in what YOU can tell, but the tire actually CAN tell, just doesn't speak our language.🥴
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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04-08-2021, 10:56 PM
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#12
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3 Rivet Member
2021 25' Globetrotter
Kinnelon
, New Jersey
Join Date: Aug 2020
Posts: 143
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Quote:
Originally Posted by ROBERT CROSS
^
X2
As noted above the Suburban is no longer a 'truck'.
When its time consider LT tires, a better option when loaded and towing.
Bob
[emoji631]
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Why is the Suburban no longer a “truck”? It is still built on a truck frame per GM. Also the Bridgestone OEM tires are light/medium duty truck tires. Thanks all for the feedback.
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04-09-2021, 08:25 AM
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#13
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by Jason P M
Why is the Suburban no longer a “truck”? It is still built on a truck frame per GM. Also the Bridgestone OEM tires are light/medium duty truck tires. Thanks all for the feedback.
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Because it's no longer equipped as a 'truck', they lowered the tow & GVWR rating,(our '06, 8600lb & 2690lb payload), comes with passenger car tires. smaller brakes, lighter axle ratings, smaller trans cooler, no trans temp gauge, lower ah generator.
Still a great errand, grocery getter and looks sooper. TETO
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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04-09-2021, 06:15 PM
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#14
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3 Rivet Member
2021 25' Globetrotter
Kinnelon
, New Jersey
Join Date: Aug 2020
Posts: 143
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Quote:
Originally Posted by ROBERT CROSS
Because it's no longer equipped as a 'truck', they lowered the tow & GVWR rating,(our '06, 8600lb & 2690lb payload), comes with passenger car tires. smaller brakes, lighter axle ratings, smaller trans cooler, no trans temp gauge, lower ah generator.
Still a great errand, grocery getter and looks sooper. TETO
Bob
[emoji631]
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Not sure which model you are comparing. Those 2006 numbers seem to be a 2500, particularly the payload. I am certainly not comparing a 2018 1500 to either a prior 2500 suburban or 2500 pick up, but my 2018 suburban 1500 actually does have an external trans cooler, trans temp gauge in the driver information center, light truck tires, heavier axle ratings than a 2006 1500 and massive disc brakes. The latest gen 2021 suburban takes it up a notch further with the 10 speed trans and straight 6 diesel. Again not comparing to a 2500. I do wish the 2018 offered a 4.10 rear, but the 2021 10 speed with a 3.23 should help.
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