What is the proper air pressure for 33 BF Goodrich all terrain R 15 tires.?

Answer 1

Original answer: How the heck should I know ? Edit by NWwheelin7109: I have the mud terrain version of these tires and i researched this with no luck, so i went to a local 4x4 shop and asked. I wasnt expecting a short answer, so here ya go. Anytime you are on-road driving, you want them anywhere from 18-25 psi, if you have the narrower footprint, less psi is fine, if you run something closer to a 12.5" footprint then you will want to run something close to 25 psi or a little less. You dont want to over inflate these tires or else you will have just the center of the tire bulging out and making contact with the road, this offers less traction and causes strange wear characteristics. Anytime you are off-road, it is best to air down for maximum traction, anywhere from 7-10 psi, some extreme offroaders that have beadlocks will air down to 5 psi or less, but you run the risk of unseating the tires bead at that low of psi. airing down allows your tires to bulge at the bottom, creating a wider footprint, also this allows your tires to distort and form around uneven terrain, increasing the surface area of your tires contact points. Once you are ready to get back on the road, you will want to refill your tires, preferably with an on-board air system, but if you dont have one on your rig, drive slowly to the nearest gas station to air up, driving too fast with underinflated tires can cause serious blowouts. If you must drive on the road, I was told to not go over 25mph, so if there are other drivers, please let them pass, we dont want anymore bad steriotypes about offroaders as it is. Hope this helps and happy wheeling!