craig333
Riley's Human
Installers usually inflate to whatever the door sticker says. Always pays to check when you get home.
I would use a load calculator for the specific size/specs of your tire. You certainly don't want K02s with 70+ psi in them. My K02's have a maximum pressure of 65PSI written on the sidewall. Using a load calculator I derived 55psi front 60psi rear (w/camper). 325/65/r18 BFG k02, E rated. Obviously the Px will be dependent on your tire width etc.BigRanchInSky said:Speaking of tire pressure, I just purchased BFGoodrich - All-Terrain T/A KO2 (that replaced the stock Goodyear Wranglers that came with my 2019 F250) and the shop inflated the back axle to 80 psi and the front to 70 psi.
Tire tech was telling me I needed to properly support the camper weight in the rear of the truck otherwise the front of the could truck lift up=have less than optimal control.* I only drove it back to the camper storage place a few miles, but it did seem overall better riding with new tires.
*I have experienced the dreaded "death wobble" in my F250 [that scared me and my wife to death], so the new tires are on top of new stock Ford steering stabilizer part (that I had to make a slight fuss to the dealer about getting, but they did it pronto after that).
Soon I will start a new camper season and hope to dear lord the death wobble is somewhat pacified.
Apologies to OP for stealing his thread.
Your tire tech doesn't quite have their physics correct. Tire pressure will have only a very small effect on truck tilt and definitely no effect on front tire weight and control. That's purely due to where the "center of gravity" is. For our truck/camper, all the camper weight was on the rear axle, so it might be close to that for yours.BigRanchInSky said:Speaking of tire pressure, I just purchased BFGoodrich - All-Terrain T/A KO2 (that replaced the stock Goodyear Wranglers that came with my 2019 F250) and the shop inflated the back axle to 80 psi and the front to 70 psi.
Tire tech was telling me I needed to properly support the camper weight in the rear of the truck otherwise the front of the could truck lift up=have less than optimal control.* I only drove it back to the camper storage place a few miles, but it did seem overall better riding with new tires.
*I have experienced the dreaded "death wobble" in my F250 [that scared me and my wife to death], so the new tires are on top of new stock Ford steering stabilizer part (that I had to make a slight fuss to the dealer about getting, but they did it pronto after that).
Soon I will start a new camper season and hope to dear lord the death wobble is somewhat pacified.
Apologies to OP for stealing his thread.
rubberlegs said:Your tire tech doesn't quite have their physics correct. Tire pressure will have only a very small effect on truck tilt and definitely no effect on front tire weight and control. That's purely due to where the "center of gravity" is. For our truck/camper, all the camper weight was on the rear axle, so it might be close to that for yours.
Also the pressures sound a bit high, especially the front, so it'd be worth calculating it. If you want a check for correct pressures, weigh your front and rear axles if you can find a weigh station, give us your exact tire size, and one of us can check for you.
The tire wobble thing is something I can't comment on. Maybe there's an expert here who can.
Someone else commented that their tires were only rated to 65psi. Those sound like load range C (not E) tires. Maybe D. I can't check now since we are on the road... Load range E goes up to 80 psi.
LT 325/65R18Mighty Dodge Ram said:Yes, 65psi = LR-D.
Yup, it's interesting that the answer is often "it depends"! Look at https://www.toyotires.com/media/2125/application_of_load_inflation_tables_20170203.pdf on page 22, where there's E rated tires at different pressures, 65 and 80. For some reason, your tires aren't in the table.Jsoboti said:LT 325/65R18
127/124R E RWL 34.6" 13" 9-12" 9.5" 15/32" E 3860/3525 lbs 65 psi 67.1 lbs
601
Nope, they are 100% E rated tires with a 65 PSI max
Your setup might be differently loaded than ours, but you might take a look at the weight on front and rear axles. At highway speeds, the thicker construction can heat up the tires, which can do some damage. Our Fleet weight is all on the rear axle on our Tacoma, so we need higher rear pressures. See https://www.toyotires.com/media/2125/application_of_load_inflation_tables_20170203.pdfNew Man said:I argue with the service guys at my Toyota dealer who always want to set them at 32 psi [!]. I inflate mine to 40 psi front and back.