Whatever they have handy
Been in the tire business many, MANY years. Sold em ALL over the years. RV mfgs, just like car/truck mfgs, buy tires in bulk, and they grab WHATEVER is handy when they are slapping tires on the finished unit. Usually any “TS” (trailer service) tire is the CHEAPEST tire they can find. Doesn’t matter the brand. If you’re going to leave the TS tire on the rig, you should chk the mfg date. It will be on the sidewalk as two numerals i.e. 06/17, or 6/17. That means the was manufactured the 6th week of 2017. Those tires may have sat stacked in a warehouse for months, if not years. NEVER , EVER accept your rig if the tires are over a year old. The first chance you get, pull the crap TS tires off and put LT (Light Truck) tires, min 10ply, Load Range E minimum on the rig and ALWAYS keep them at max pressure (also on the sidewall) stored or on the road
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