Quick question for all you agriculture people feeding america out there. i have had some trouble keeping tires on my truck for longer than a year. i started off with cooper st and i got two sets of those i dont remember the exact milage but i didnt feel it was too good then i got a set of bfg alt and now it time for some new rubber. i dont really know where to go or stick with the same tires. my family farms so i definitely need some tires with some good traction so i dont get stuck 24/7 but i also would like some tires that tend to last a while. and another question i have is about using nitrogen instead of air to fill your tires with? is there a difference with the nitrogen? thanks for any help i can get