Trying to decide on a tire brand for my Springdale 27ft 5ver. The Duros came with the unit in 2003...they look perfect but the age deems replacement with a manufactured date of July 2002. I have read, read, and reread everything I can find on RV tires. This is what I can deduct...Michelin Ribs with 16 inch wheels are best...any foreign i.e. Made in China tires are bad. Marathons have numerous reported failures with extensive damage to peoples RV's. They are reported to also be manufactured in China. I can't afford upgrading to the larger wheels with Michelins. I don't want the cheapest tire I can find either. Here is where I need some additional input... What experiences have this forums members had with the Marathons and, has anyone heard of Towmaster? Towmasters are the "top-of-the-line" at our local Les Schwab stores. Many thanks...have a great weekend!