BFG KO owners, how much psi do you use?

[GoCarGo]

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[BillGotthelf]

I am running the 315-70-17's but the max tire pressure on the tire says 50. I run 48-50 psi. dropping the pressure to 35-40 makes the ride a little softer but the sidewalls look too soft and I wouldn't want to carry much weight or over 65 for too long.

 

[nickleinonen]

i've got the 315's under mine and am running ± 40f & 38r

 

[Bob4x4]

First off you need to check your tire rating,d or e. then you will be able to know how high is recomended safe.

I use the 315's and have the most fun at 10-12 psi... ... ..... in the sand dunes making the gassers look stupid. Oo.



Bob

 

[BHolm]

I have the 285s and I run 50 psi front and rear. I have about 600lbs of sand bags in back and frequently haul a 2000 lb trailer, snowmobile season ya know If I was empty I would run 45 in back, if I was towing the gooseneck horse trailer I would be up to the 65psi max. I am trying to keep up with the relative wieght distribution and loads on the truck. Empty the truck is pretty nose heavy, about 63/37. With my wimpy winter loading I am more like 58/42. With the horse trailer probably 50/50.



Anyway, the tires ride nice, and are wearing fine at 50psi.



40 seems pretty low considering the truck wieghs nearly 7000 lbs. That gives you something like 2200 lbs per front tire empty, roughly 70% of the tires max load at max pressure. 70% of max pressure is about 45psi. I don't think I would run below that. The sidewalls in front are going to be pretty bulged at 40, pump them up a bit The BFGs are extremely durable but a blowout is something you really do not need at highway speeds, it can happen.

 

[y-knot]

I suppose air pressure is up to the individual, but 38-40 is just way to low for a front tire. I always run the fronts at MAX pressure, which in this case is 65psi. There is so much weight on them that they still bulge a good bit at max pressure. They would look like they were flat at 40psi. In the rear I run 50psi, I have a dually so the DRW setup is much different then a SRW. Even with a load, the 50psi in the rear works very well. Also, with the 65psi in the front, the tires are still flat across the tread, no cupping and even tire wear.

 

[MLimpert]

I usually run the fronts at 55-58 and the rears around 50. I hate the sloppy feeling of low tire pressure, and I like a nice crisp ride.

 

[MMiller]

I run 305-70R16's on the truck right now. Slightly larger then a 33X12. 5. I run about 45 in the front all the time and empty I run 35 psi in the rear. Whenever I hook to the trailer I run 50 psi in the rears. I found these pressures to get even tire wear. Pump them up too hard then you run on the center section of the tire. An overinflated tire is as bad as one thats too soft. They won't grab the street when too hard.



One thing to do is drive the truck in a gravel lot,road etc. The tires will have dust on the treads. Then go drive straight on some pavement. If the outer lugs still have dust on them let more air out. Or you could spin the tires on the pavement and look at the marks, to judge on inflation. Its fun too . I really don't think you can judge entirely by the bulge on the sidewall.



It makes no sense to me to run them hard enough to just wear the middle section out. My truck rides much better empty with tire pressure down on the rears too. I don't feel like the tires are too soft when cornering too.



Just my $. 02. I really don't think there is an appropriate pressure for a tire. Just an appropriate pressure for a tire in an application. Each truck will be differnt, grill gaurds, bumpers, hitches, tool boxes, cab configurations, will all change the weight of trucks.



Michael

 

[RAMINSPEED]

Running empty with 315's I run 45 front 32 rear. I base it upon tire wear and shoulder bulge.

 

[nickleinonen]

I suppose air pressure is up to the individual, but 38-40 is just way to low for a front tire. I always run the fronts at MAX pressure, which in this case is 65psi.

the 315/70/17 bfg's are rated for 3195 lbs @ 50psi max. . if i were to run 50psi up front, my tires would be wearing down the center real quick [i am basing it on the contact patch i see when i run through a wet spot]. i am getting nice even tire wear at the pressures i am running, and the ride is nice. the pressure i have in my tires [40 front, 38 rear] is more than enough to support the weight of the truck



but yeah, "I suppose air pressure is up to the individual" is very true...

 

[IC Smoke]

285/75/16 60lbs all the way around. Im not sure about the 70/17's though Also I do alot of hauling and the higher pressure helps a little.



Ian

 

[JMingledorff]

45 front and rear. Getting even tire wear and no roll-over on the sides of the front lugs. Rotate often. 20,000 on them and have plenty tread left. Full tire print front and rear.