Hannibal wrote:
Just returned from a week long trip and noticed one of my 2009 D rated Marathons on our 8500~lb 5th wheel has finally started to grow in diameter on one side. Six years is past what I feel comfortable with with any tire LT or ST so in my humble opinion, I got my money's worth out of them. I'm probably going to buy another set of Marathons for it.
The newest Marathon made in the last couple years should prove to be far more reliable. GY moved production to a NEW factory in China with direct GY employees to QC the materials and build process. Not the same as the previous try with build to spec by the lowest bidder that caused many troubles.
For the OP... consider the Kumho 857 in your 14" size.
http://www.tirerack.com/tires/tires.jsp?tireMake=Kumho&tireModel=Radial+857