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Your F53 tire pressures

Happy_Jim
Explorer
Explorer
I was curious how much ititial cold tire presure folks run on their Ford F53, 19.5 tires. I run 85psi cold all way around. I understand loading ect.

I have noticed that pressure will rise approx 10psi while driving on a warm day.

Thanks.
Travel Safe - Enjoy
Happy Jim
1999 Holiday Rambler Vacationer
2006 Chevy HHR Toad
19 REPLIES 19

tropical36
Explorer
Explorer
tropical36 wrote:
First how many are aware that you can pull up on any truck scales along the interstates and I have never found one who wasn't more than happy to weigh you?
If you only go by stickers on your coach, what happens if you're overloaded like so many are, before they even leave the driveway?
How many of you that do weigh, only weigh each axle, like I do and if so, how do you know if one side weighs a lot more or will get that way during your travels?
How about when you leave Death Valley CA one morning and go up to Yosemite National park and where do you stop along the way to to air up your tires because of the change in ambient temps. I mean there's snow up there on Tioga Pass in the summer, folks.
Load inflation chart is the only way to go IMO and again, add the 10 - 15psi to take care of these possible variables.

Also and recently learned is that even though you might have plenty of CCC to burn, it doesn't mean that it's going to be evenly distributed and no matter how hard you try. With our new to us and present coach, we're about a ton to the good on the front, but 160lbs over on the rear. A paltry amount I know, but still and just saying that one never knows without weighing. Still don't know if both rear sides are equal and there's no way I'm going with that exact weight with the load inflation tables.
I think you'll find that most all blowouts occur with under inflated tires, unless it's due to a road hazard or advanced age, of course.
Here's a tip and even if you do run over something in the road, causing a blowout and damage to the inner fender and beyond, don't report this road hazard to your insurance company, otherwise it will go on record as a collision, rather than be treated as a comprehensive thing. In other words, you don't have a clue as to what happened, which is usually the case anyway.
"We are often so caught up in our destination that we forget to appreciate the journey."

07 Revolution LE 40E_Spartan MM_06 400HP C9 CAT_Allison 3000.

Dinghy_2010 Jeep Wrangler JKU ISLANDER.

1998 36ft. National Tropi-Cal Chevy Model 6350 (Sold)

tropical36
Explorer
Explorer
First how many are aware that you can pull up on any truck scales along the interstates and I have never found one who wasn't more than happy to weigh you?
If you only go by stickers on your coach, what happens if you're overloaded like so many are, before they even leave the driveway?
How many of you that do weigh, only weigh each axle, like I do and if so, how do you know if one side weighs a lot more or will get that way during your travels?
How about when you leave Death Valley CA one morning and go up to Yosemite National park and where do you stop along the way to to air up your tires because of the change in ambient temps. I mean there's snow up there on Tioga Pass in the summer, folks.
Load inflation chart is the only way to go IMO and again, add the 10 - 15psi to take care of these possible variables.
"We are often so caught up in our destination that we forget to appreciate the journey."

07 Revolution LE 40E_Spartan MM_06 400HP C9 CAT_Allison 3000.

Dinghy_2010 Jeep Wrangler JKU ISLANDER.

1998 36ft. National Tropi-Cal Chevy Model 6350 (Sold)

AZAmmochief
Explorer
Explorer
I run 80psi on all 6 tires, per the recommendation on the sticker. I find going by the tire markings, the ride is much rougher. Also, as noted the pressure will rise considerably while driving, especially in the desert climates, well over 100 psi. Good luck and enjoy the travel.

LVJ58
Explorer
Explorer
The the load inflation chart for our R250 series Bridgestone 245/70x19.5 Load range "G" tires reflects a minimum of 80psi so that's what we comply with.
Jim & Sherry Seward
Las Vegas, NV
2000 Residency 3790 V-10 w/tags & Banks System
2003 Suzuki XL/7 toad

wolfe10
Explorer
Explorer
"Cold pressure" has nothing to do with a specific ambient temperature.

It means BEFORE DRIVING (which heats up the tires) at whatever the ambient temperature is.

So, absolutely, most of us have to add air in the fall/early winter.
Brett Wolfe
Ex: 2003 Alpine 38'FDDS
Ex: 1997 Safari 35'
Ex: 1993 Foretravel U240

Diesel RV Club:http://www.dieselrvclub.org/

Dale_Traveling
Explorer II
Explorer II
Stay with cold temp inflation numbers and adjust you pressures as necessary during the year as local temperatures change or as you move around the country. I'm also an 80 PSI owner which gives me slightly more capacity in the tires than I have in the axles. Pressure increases can be high as air and road surface temps increase but those numbers are factored in by the tire builders. You have to consider that regardless of if the coach is rolling down the road or parked in the driveway put to bed for the winter your tires need to be aired up to the recommended pressure for the load we demand they carry. Bleed down a high daytime temp and you could be under inflated at 5AM the next morning.

I have my weight checked twice a year. In the spring after taking out all the stuff I didn't use all last year and loading new stuff I probably won't touch all season. Also at the start of our two weeks on the road mid summer when I'm really loaded with stuff I think I might need or use but never do. The hard part is figuring in the weight of the rocks my Navigator collects along the way and forgetting to take them out of the coach when we get home before the next trip and more rock collecting. Maybe I should go with 85 or 90 PSI just to be on the safe side?
2006 Hurricane 31D built on a 2006 Ford F53

tropical36
Explorer
Explorer
Happy Jim wrote:
I was curious how much ititial cold tire presure folks run on their Ford F53, 19.5 tires. I run 85psi cold all way around. I understand loading ect.

I have noticed that pressure will rise approx 10psi while driving on a warm day.

Thanks.

One need only concern themselves with cold tire pressures, no matter what the ambient might be for that particular day.
Each axle must be weighed and I always allow 10 - 15 psi for a cushion and to take care of all the variables that can and do take place over an extended trip, especially. These would include changes in ambient temps. as well.
"We are often so caught up in our destination that we forget to appreciate the journey."

07 Revolution LE 40E_Spartan MM_06 400HP C9 CAT_Allison 3000.

Dinghy_2010 Jeep Wrangler JKU ISLANDER.

1998 36ft. National Tropi-Cal Chevy Model 6350 (Sold)

Hudsoner
Explorer
Explorer
TNGW1500SE wrote:
The sticker on my Sunova says to run 80 so I just run 80

Why do you do that? The sticker also says that this pressure is the max pressure for the max rated load. Do you know what your individual tire laod is?
My sticker also says 80, but I run 75 in the front and 80 in the rear!

Kaz
Explorer
Explorer
wolfe10 wrote:
Treads like this concern me. Basing tire pressure on YOUR coach on what others with different coaches, different weights will not get you the correct answer for YOUR coach.

Please:
Best-- get individual wheel position weights. Using the heavier wheel position on each axle, go to your tire manufacturer's Inflation Table to determine the correct MINIMUM PSI for all tires on the axle.

Get axle weights. This ASSUMES perfect left/right weight distribution which is not likely. So you will need to add a "fudge factor" to account for left/right imbalance.

I agree. This is not a matter for personal opinion or anecdotal stories. The only safe way is for a four-corners weighing and careful reference to the manufacturer's load/inflation tables. Goodyear's tables (the brand for my RV) are here: http://www.goodyearrvtires.com/pdfs/rv_inflation.pdf.
Skip
K4EAK
2013 Thor ACE 30.1

wolfe10
Explorer
Explorer
Treads like this concern me. Basing tire pressure on YOUR coach on what others with different coaches, different weights will not get you the correct answer for YOUR coach.

Please:
Best-- get individual wheel position weights. Using the heavier wheel position on each axle, go to your tire manufacturer's Inflation Table to determine the correct MINIMUM PSI for all tires on the axle.

Get axle weights. This ASSUMES perfect left/right weight distribution which is not likely. So you will need to add a "fudge factor" to account for left/right imbalance.
Brett Wolfe
Ex: 2003 Alpine 38'FDDS
Ex: 1997 Safari 35'
Ex: 1993 Foretravel U240

Diesel RV Club:http://www.dieselrvclub.org/

eadeal55
Explorer
Explorer
running 100 psi cold in all 6 tires. Load range G Firestones. Weight last month loaded with gas/propane/water and empty tanks was 19,756lb...on a 20,500lb chassis. Rides smooth and handles like it is on rails. 7.6 mpg avg. over last 2700 miles.
Andy & Lee + Molly, the 4 lb Chihuahua
2020 Tiffin Wayfarer 25RW...towing a
2007 Chevy HHR LT2 w/2.4L EcoTec,
Blue Ox Aventa LX, Brake Buddy Classic
FMCA #F359977 - Colonial Virginians, Past President 2012-14, 2018

gperky
Explorer
Explorer
I used to run 75-80 and got average 8.5 mpg. I raised them to 90 to see if it handled better in crosswinds. It seems a little better, and not too much harsher, but the gas mileage has increased about 1 mpg. so far.

kmb1966
Explorer
Explorer
Approx 97-100 psi in each tire
Load Range G

STBRetired
Explorer
Explorer
I run my Michelins at 82 front, 87 rear based upon the Michelin charts and the axle weights of the rig at the CAT scales
1999 Newmar MACA 3796 F53 6.8L
2016 Ford Edge Sport
Roadmaster Sterling A/T with Brake Buddy Select