i run these BF 37x12.50 on 20 inch rims
they are louder than the stock BFG's. dont have any other tires to compare them to so far.
they do suck on ice. on snow, its not too bad.. still a weird feeling having a 8k lbs vehicle fishtail.........
anyways, there are 2 versions of these tires from what i understand.
the first version, and the KM2.. they might both be KM2 actually, but still there are 2 versions. one is old, and the other is new.
i run the new version which looks like the ones in your last pic.
im running stock suspension. only T bars cranked a little.
even with the 12.5 width, there will be some rubbing on the front end on the rear of the wheel well. just trim the plastic molding, and all is good.
if you go with 13.5 width tires, and you have air bags in the rear, you NEED to modify the leveling arm on the drivers side, rear wheel well.
this is a easy mod, and if you have problems searching for it, let me know.
yes these tires are not cheap.. expect to pay about $500 to $650 for each tire for 20 inch rims. not sure on prices for 22's. i got a deal on mine from a member here i paid $1200 for 5 tires. 4 of them with 4k miles on the.. the 5th was/is still new.
also, if you look at my first pic and the last one, you will see the difference at the very bottom where i trimed down the plastic on the rear of the fender well.