GMC Sierra tire question

[Bigdomino]

I have a 2017 Sierra 1500 crew cab. It has 20 inch tires on it. P275 tires. Dealer tells me I should run my tires at 35 pounds. I believe the Goodyear Eagles are rated for max pressure at 40 or 44 pounds.

I pull a Whitehawk 27dsrl. I am wondering I should be raising the pressure level on my tires when I am towing? Maybe 40 instead of 35? What pressure are you Ll using with this tire?

Steve

[Sundancer330]

Always tow at max rated pressure, you can reduce pressure when not towing for a better ride.

[Murff]

Originally Posted by Sundancer330

Always tow at max rated pressure, you can reduce pressure when not towing for a better ride.

X2

Murff

[Bigdomino]

You guys Max the rear tires only?

[Sundancer330]

Originally Posted by Bigdomino

You guys Max the rear tires only?

Keep them all the same.

[oldmanAZ]

Originally Posted by Bigdomino

I have a 2017 Sierra 1500 crew cab. It has 20 inch tires on it. P275 tires. Dealer tells me I should run my tires at 35 pounds. I believe the Goodyear Eagles are rated for max pressure at 40 or 44 pounds.

I pull a Whitehawk 27dsrl. I am wondering I should be raising the pressure level on my tires when I am towing? Maybe 40 instead of 35? What pressure are you Ll using with this tire?
Steve

I have to ask: Why are you asking? Are you having an issue when towing?

Like the others have said, when towing inflate the TV and TT tires to the maximum shown on the tire sidewall. You can try reducing the TV front tires a bit (2 to 5psi) and see how the rig handles.

You can check the Goodyear site for inflation information. Almost always you'll find the higher pressure provides tires with greater load capacity. In addition, higher tire pressures reduce the sidewall flexing which reduces tire temperatures and helps reduce sway.

Once you try the higher pressures, please let the JOF know what you think.

[norty1]

I use the cold pressure on the truck sticker on the driver side doors jam.
Often it will be different front to back.

[01tundra]

I always keep the cold pressure at what the factory sticker on the door pillar says on my 2500HD (60 psi front & 75 psi rear for my particular truck).

[ROC-REQS]

Originally Posted by Bigdomino

I have a 2017 Sierra 1500 crew cab. It has 20 inch tires on it. P275 tires. Dealer tells me I should run my tires at 35 pounds. I believe the Goodyear Eagles are rated for max pressure at 40 or 44 pounds.

I pull a Whitehawk 27dsrl. I am wondering I should be raising the pressure level on my tires when I am towing? Maybe 40 instead of 35? What pressure are you Ll using with this tire?

Steve

Steve,

The cold pressure that is stated on the sticker on the door pillar is what is required to meet all the weight ratings of your specific truck, given you're still have the OEM size tires on the truck.

You can increase tire pressure to make the ride better as long is you don't exceed the maximum tire pressure specified on the tire's side wall.

For example, on my truck I run the front at 62# because I find it gives me a better ride and 80# back because that gives me the maximum weight rating for the truck. The tires max rating are 80#, the sticker indicates 55# front and 80# back.

Have you considered going to LT tires when you need to replace the tires?

Goodyear's Tire Tire Inflation & Loading guide may provide some additional information to help you.

You may also what to check to see if Goodyear has an load inflation chart for you tires.
For example here's Load / Inflation Information for Goodyear's RV Tires.

Here's a link to Goodyear's Tire Care Guide, it includes load inflation charts on pages 9 thru 11

Hope this information is of some help to you.

[curver900]

my first recommendation is to get rid of those crappy tires, I had 3 out of 4 replaced when I had 4k miles on my truck because "we can't balance an egg" the dealer told me.....
I went to coopers and they are way better... discover ATP XL rating they all road force balanced better than the goodyears and provide much better traction..


you have to know the weight being applied to the rear axle to get the proper tire pressure.. the tires you have on your truck are XL for extra load... the 44psi gets you to the max that they can handle... which hopefully matched to your axle rating or is higher.. as long as the trailer and your gear don't exceed the tire rating then you can run at 35 psi.. personally I don't care to run at that pressure overheating is a possibility especially in the summer...


I always run my rears at max 44psi, fronts at 40psi when trailering and then back to 35psi when not all the way around..


your mileage may very...

[Bigdomino]

Thanks to everyone for your great posts. I appreciate the information. RV is in storage for the winter. This spring when I tow again I will try upping the pressure on the rea to see how it goes.

When I travel I do check the tire temperatures. I have a gun I can aim at the tire to see its temperature. I check the truck and the trailer. It is amazing how one side of the rig traveling in the sun can be higher than the other one without direct sun on it. Do you guys check your tire temperatures???

Steve

[blwright]

I upgraded not only in size, but in load rating for my truck. Put 275/65 and went to an E rated tire (10 ply). I run mine at 50 PSI. MUCH better characteristics when towing. BTW, my factory NotSoGoodYears only lasted 27k.

[Iraqvet05]

Won't running them with higher pressure will trigger the TPMS light? The police cars I work on (Dodge) will trigger the TMPS light if the tires are under OR over 3 lbs so the sensors are rated for a certain PSI range. If inflating your tires beyond the rated PSI triggers the TPMS light, will you know if a tire goes low?

[SMS1115]

Originally Posted by Iraqvet05

Won't running them with higher pressure will trigger the TPMS light? The police cars I work on (Dodge) will trigger the TMPS light if the tires are under OR over 3 lbs so the sensors are rated for a certain PSI range. If inflating your tires beyond the rated PSI triggers the TPMS light, will you know if a tire goes low?

I have not had this issue on any of our GM products. I get the light at 5 psi below recommended pressure. Nothing over. Last truck I upgraded to E related LT tires and ran 65 psi in them when the truck was set for 35. Never an issue until they got down to 30 psi, then the light came on. Again, just my experience with GM products.

[Jagiven]

off the production line will recommends a tire pressure that gives a good ride and more importantly the best fuel economy possible, as they are required by federal law to meet certain fuel mileage requirements. But how you use the truck, really will determine what tire pressures you should run at.

When I replaced my OEM tires a few years back. I installed a different brand, but with the same specifications. Handling on the new tires with the trailer was terrible at 35 psi.

My recommendation, over a few trips play around with the tire pressures, and write down how the ride and handling felt, also do not forget wind/traffic conditions. Then adjust for the next trip. I did this a few times. I have settled on 40 psi up front and 45 psi in the rear. I still do not like the tires, but dropping $700-900 on new tires just is not going to happen.