They issued that statement originally in 2006.
When it came out I had already had 3 Goodyear Marathon failures.
So, I tried increasing the pressure 10 psi as the statement said. I had 3 more Goodyear Marathon failures.
I never tow faster than 65 mph, the tire inflation pressure is checked and maintained religiously before every tow and I've had my rig weighed at each wheel by RVSEF and was under the rated load on every wheel. I did the weigh in under maximum load conditions: Fully loaded for a trip, everyone and gear on board and ALL the water tanks completely full (fresh, grey and black).
They must have a design flaw or manufacturing problem. No more Goodyear Marathons for me.
'13 Excel Winslow 34IKE
'12 GMC Sierra 3500HD
Previous RV's: '03 MobileScout Titan 29DBS; '01 Sunnybrook Lite 2708 SLE; '99 Coleman Utah
Previous TV's: '02 Chevy Suburban 2500 8.1 4.10; '99 Chevy Express 1500 5.7