Road trip tire pressure ?

[chorky]

Anyone have a link to these charts that discuss PSI at various weights?

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[jav_eee]

Anyone have a link to these charts that discuss PSI at various weights?

not all of them have it but Toyo has one Here

 

[chorky]

Here

yeah I thought about that immediately after posting. I'm sure a lot depends on individual tire manufacturers also. Mickey suggests to just call them - which I probably will do once getting new shoes. I had thought there might be a general chart somewhere but theres too many variables.

Must drink more coffee....

 

[Jgfromthesip]

Curious I don’t want to sound crazy but do you count the weight of the truck itself or just the payload ?

 

[jav_eee]

yeah I thought about that immediately after posting. I'm sure a lot depends on individual tire manufacturers also. Mickey suggests to just call them - which I probably will do once getting new shoes. I had thought there might be a general chart somewhere but theres too many variables.

Must drink more coffee....

My goal is even wear. So whatever pressure produces that works for me.

 

[jav_eee]

Curious I don’t want to sound crazy but do you count the weight of the truck itself or just the payload ?

Weight of the truck PLUS payload. Tire weight ratings are TOTAL weight. But remember to divide the front/rear axle weight in half. Best practice is to load up and head to a scale and see what each axle weight is. Then use that chart.

 

[ShadowsPapa]

yeah I thought about that immediately after posting. I'm sure a lot depends on individual tire manufacturers also. Mickey suggests to just call them - which I probably will do once getting new shoes. I had thought there might be a general chart somewhere but theres too many variables.

Must drink more coffee....

I called and talked to a customer engineer type with General who asked the size of the tire, the weight of my truck and so on - and told me a range for my truck. And so far, so good. Nice ride, even wear, good traction.

 

[ShadowsPapa]

Weight of the truck PLUS payload. Tire weight ratings are TOTAL weight. But remember to divide the front/rear axle weight in half. Best practice is to load up and head to a scale and see what each axle weight is. Then use that chart.

Check the tire pressure recommendations for some cars and trucks over the years - "depending" - you may see pressures a bit higher for the front tires vs. the rears. One car I have has a chart in the glove box and shows the front tires with 2 psi higher than the rears.

 

[bd100]

One challenging thing is deciding what to do if the usage varies. Heavy load and towing at 70mph in summer asks for more pressure, but after that trip then just driving around town unloaded asks for another pressure. If going back and forth a lot you just end up leaving it at the higher pressure all the time to avoid having to add/remove air each week.

Anyhow, mine are 265/70 R17 E, and I run them around 50psi because when hauling and towing for a trip at 70 MPH the back tires were noticeably heating up when at 40psi. Now that we're home for a while I may bring them down to 45 or so.

And my older pickup has a table in the manual which recommends a pressure, and says to add more if highway speeds, and add more if carrying cargo. So find a chart for your tires and see what they recommend.

 

[ShadowsPapa]

I actually adjust as needed. That's why there's a compressor in the garage a few feet from our Jeeps. I adjust at the onset of winter, and then down again at the break of weather into spring. And when I tow, I put more air in the back (as well as upping the air bag pressure)
Mine didn't get hot when towing. I ran about 40 when loaded with trailer and gear. Then back down when done. I didn't bother upping them when the fuel pump on my SX4 stopped pumping and I had to grab my trailer and haul the car back home. (called my wife and said "bring the truck, she died on the way to the show. Ran the truck home and dropped my wife off, and hooked up to go get the car.)

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