[rohrmann]

Your rig is rated 16,000 lbs and came with G range tires. Unfortunately, you will not find any tires other than those rated for trailer use that will carry the load. LT tires in sizes that will fit, will only handle 3,042 lbs, so much less than a 7,000 axle needs to have to get the 7,000 lb rating. If your rig was much lighter and only came with 6,000 axles, you could use the LT tires, but not on this rig.