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Tire Pressures?

MobyDick

MobyDick

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What are you guys running your tires at unloaded? Door sticker says 60 and 65. Dealer has them ranging between 78-82


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I don't run 65 in the back if I'm unloaded. I remember my 12 3500 Cummins was way different. I think the jamb sticker actually said the loaded and unloaded pressure recommendations

I feel like I want to run in the 50s in my 2500 now but I just haven't yet. I usually keep it at 60
 
I had Michelin Defender LT tires (275/65-18 E) tires on my Tundra for 17K miles. My local tire dealer and Michelin (on-line chat) both recommended a minimum of 50/50-psi when empty. I did that and when towing kept them at 60/63-psi. They performed well and show no wear. My 2020 RAM 2500 should be here soon. I plan to run 55/55-psi empty and will most likely run 60/65-psi (or door placard) when towing.

There are several tire pressure charts available. All show recommended pressures by tire size and load.

I plan to follow this thread as well as the Tires thread. I've read good and bad reviews on the Transforce HT tires. Not yet sold, but may keep them due to the new truck purchase and new tires on our SUV in 2020. It would be great to see Transforce HT2 tires on the RAM when it arrives. Doubtful, but hopeful since local Firestone stores don't advertise or show the HT tires with an on-line search, just the HT2 tires.
 
Sarge33Army said:
I had Michelin Defender LT tires (275/65-18 E) tires on my Tundra for 17K miles. My local tire dealer and Michelin (on-line chat) both recommended a minimum of 50/50-psi when empty. I did that and when towing kept them at 60/63-psi. They performed well and show no wear. My 2020 RAM 2500 should be here soon. I plan to run 55/55-psi empty and will most likely run 60/65-psi (or door placard) when towing.

There are several tire pressure charts available. All show recommended pressures by tire size and load.

I plan to follow this thread as well as the Tires thread. I've read good and bad reviews on the Transforce HT tires. Not yet sold, but may keep them due to the new truck purchase and new tires on our SUV in 2020. It would be great to see Transforce HT2 tires on the RAM when it arrives. Doubtful, but hopeful since local Firestone stores don't advertise or show the HT tires with an on-line search, just the HT2 tires.
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I had the HTs on my 2016. They were okay as long as you were driving on dry road. Wet, ice, snow, gravel traction was terrible in my experience. The ATs I got on my 2019 were noticeably better, but I replaced them before I got winter weather. I am sure they would have been fine in mild winter weather.

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Thanks for all the reply’s. I’ve lowered them to 60. See how she handles it for some miles


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Burn'n Oil said:
If you still have the Transforce tires, 60 PSI is fine. You could even go lower (empty) according to the load inflation chart (Page 6):

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That chart may be old? It doesn't include the 285/60R20 tires I got with mine.

Here's an updated PDF:
 
j_t_l said:
That chart may be old? It doesn't include the 285/60R20 tires I got with mine.

Here's an updated PDF:
Click to expand...
Old? Five yrs is considered old now? OMG... Ok, yes, the table is dated but does cover the tires that I believe are installed on the OP's truck. I concede - your table (chart) is better. ;) And herein is a good point: Operators of HD pickmeups are incessantly asking about tire pressures for their trucks. Dealers and their service departments don't help by consistently blowing tires up to 80 PSI. If you're the least bit interested in optimizing tire wear, then you want to get intimate with a tire's load inflation table. Unfortunately, 2500 operators are stuck (GVWR restrictions) with a BS TPMS system that caters to the legislated tire pressure monitoring mandate. The TPIS system in the 3500s is a logical system that I believe should be incorporated into the 2500s but don't try to tell the pin-headed legislators that! Notwithstanding, I'd be quite happy just relying on a good old tire pressure gauge that ya dig out of the glove box once a week. :cool:
 
Burn'n Oil said:
Your tires are over inflated. Full stop!
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What were everybody's tires inflated to upon receipt from the dealership? Mine were at 85, well above the 60-65 on the door sticker. Also over the pressure the Firestone's are rated to. I seem to recall an issue in the not too distant past with SUV's rolling over after over inflated Firestone's blew out... Guy at the tire shop told me he's heard of issues with the tire light coming on in Ram's when the pressure drops below 80, and opined that the dealership may be airing them up to prevent dealing with warranty issues. Mine have been adjusted down to about 65 for a few thousand miles and no issues with the light. My ride also improved significantly with the lower pressure.
 
Mine were 80 when I picked the truck up, yesterday on a 400 mile trip I checked them about an hour in and they were way high. I set them at 60/70 today. Will be making the same trip tomorrow so we’ll see how the truck acts.
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TexMarQue said:
What were everybody's tires inflated to upon receipt from the dealership? Mine were at 85, well above the 60-65 on the door sticker. Also over the pressure the Firestone's are rated to. I seem to recall an issue in the not too distant past with SUV's rolling over after over inflated Firestone's blew out... Guy at the tire shop told me he's heard of issues with the tire light coming on in Ram's when the pressure drops below 80, and opined that the dealership may be airing them up to prevent dealing with warranty issues. Mine have been adjusted down to about 65 for a few thousand miles and no issues with the light. My ride also improved significantly with the lower pressure.
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Dealers will typically fill tires IAW the Tire Loading Information label, on the B-pillar. That's ok if the truck is loaded to its GVWR but we know that in most cases, it's not. The Firestone/SUV debacle in the 90s was related to underinflated tires and was a contributing factor in TPMS being legislated as a requirement for vehicles sold in the US.
 
Howdy,
NOTE: All vehicles ship from the factory at high tire pressures. Loading and unloading and shipment, and sitting on the lot.

Dealer prep should put the tire pressure at the correct door jamb pressure.

Sounds like the dealer prep team did not complete the job.
 
Ya dealers are more interested in sticking their advertisement stickers on than actually checking much. I would also guess they are scared someone will drive away from dealership haul heavy without airing up and end up with their 5’r on top of themselves
 
On my 15 the light comes on at 65 for the rear, then you must inflate to 80 to get it off.
I usually let mine at 70 so on the colder mornings they don't fall below 65 and on the heat of a trip only rise to about 75.

Do the 2019/20 let you go below 65 rear without the light?
 
Anytime I feel like my coil spring RAM rides too rough I go for a 10 mile spin in my 99 or wife's 03 and muscle memory reminds me how smooth it is lol.

Only issue is the 99 reminds me how much I enjoy selecting my own gears with a clutch and a lever out the floor
 
DevilDodge said:
On my 15 the light comes on at 65 for the rear, then you must inflate to 80 to get it off.
I usually let mine at 70 so on the colder mornings they don't fall below 65 and on the heat of a trip only rise to about 75.

Do the 2019/20 let you go below 65 rear without the light?
Click to expand...

Mine are down to 58 cold and no light


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