Ah very interesting, I didn't realize that there are inflation tables based on different inflation rates.
Is Offroading in a SuperDuty Really That Bad?
- Thread starter Mack M
- Start date
I currently own an International 4300, and sold a few years ago, my old 7.3 power stroke. I understand HD vehicles. But I've always run them at max tire pressure. I've never considered not running them at that pressure, hence my question.
Ah ok, that makes sense, thank you!
For example, I was lucky to get 35,000 miles (on the front at least) on my Powerstroke, due to the weight of the motor, but I always ran them at 80psi. My question, was if I run them at 40 or 50, based on other people's experience, would I considerably shorten the lifespan of them.
rruff
Explorer
You meant different load rates I guess? You can safely keep them much lower than the "max", if your loading is much less than the max. Unloaded I've been running mine at 35f and 30r, and with a load on the highway 40 all around. If I'm camping long term and driving to town every week or so, I'll air down and leave them at 25-30 even on pavement because I'm lazy. Theoretically they shouldn't overheat with that load and pressure even at 112 mph (the max speed rating). Wear is even after 25k miles.
Todd780
OverCamper
I do the same. I'm usually only towing 7,500 lbs w/ about 750 lbs in the bed for 2-3 hours at a time at 60 mph. 35x10R20 Toyo AT3 Load Range E.
rruff
Explorer
The opposite. You have a lot more rubber on the road at 40 psi vs 80 psi. Unless your alignment is off, your front tires will usually just be rolling unless you turn. Better traction should help. Even with a diesel I'm pretty sure you don't have 5k lbs on the front axle, so 40 psi would be more than enough for most tires in the 35" range.
The tires are your first line of suspension; they soak up the smaller irregularities that your suspension has trouble responding to.
Tex68w
Beach Bum
Tires set to 40-50 psi depending on your driving needs and payload/tow weight. Remove front sway bar, Carli kit with Accutune shocks, and 35's or 37's with a 0mm offset or less and then get out there and explore. I run my tires at 50 psi when towing and 40--42 psi for daily driving unladen.
TexasSixSeven
Observer
An old 7.3 powerstroke wasn’t very heavy compared to trucks these days, and made far far less power. With a heavy foot, an 8800 lb truck, and 1200 lbs of torque I could keep tires on my 350 for 40K miles. In a 7000 lb 7.3 putting 400 lbs of torque to the ground it would be much easier. Tires have come a long way just as trucks have.
MR. ED
Observer
I've been lightly wheeling a 14 super duty xl 6.2 for about 5 years now. Great trucks for work and play. Sterling 10.5 with locker and a Dana 60 up front. It's a bit of a rough ride unloaded but if you're putting a camper on it I bet it will settle in nicely. Thirsty for sure with skinny 35s, that I've aired down to 40psi. Buddy's have Tundras with the same mpg and can't load em like I can. I've been eyeing the 6.8 xls with the off road package so I can keep it super basic with electric windows/locks.
Todd780
OverCamper
Guessing you've got loads of payload to play with! Good choice!
So do base XL's come standard with Air, Tilt, Cruise and Power windows / locks now?
Every year it seems more standard equipment get added to trucks.
Used to be way back in the day when scanning used car classifieds in the local Bargain Finder, anything that started out with A/T/C/ PW/PDL basically meant 'loaded", lol
3,998 lbs
Not only do they come with Air, Tilt, Cruise and Power windows / locks, but also wireless Apple Car Play/Android Auto and a decent 'infotainment' screen.
Yeah, the XL's aren't as spartan as my 2002 Powerstroke XL was. It's fairly decent.