[bobbecky]

According to the specs on your rig, you are just under 7.000 lbs on each axle, so LT tires will not work, they are only good for 3042 lbs per tire. The ST tires that probably came on your rig probably just made the specs for your load. You will be better off going with a Goodyear G614 or the equivalent Sailun tire, or something similar that is rated 14 ply, and in both the tires I mentioned, are all steel cord and will give you very safe service, as they are rated 3750 lbs per tire, which gives you the full rating of your 7,000 lb axles.