Every one says towing is hard on the towed's tires. well I bought a set of 4 for our jeep today, did the math and found we got 91K miles out of the last set. go figure?
I suspect there are many people who tow without the correct tow bar recommended setups. High - low - loose connections - etc. Seen it for myself many times. Too many people don't care or listen to advice or read instructions. That includes dealers.