[CalandLinda]

Originally Posted by rohrmann

I just got done researching old Montana brochures on the Keystone site, and since 2011, the Goodyear G614 was offered as an option using the same aluminum wheels that the E range Marathons were mounted on. The G614's only come in an 85 series, so as a point of discussion, any Montana since 2011 could have the 80 series E range tire or the 85 series G range tire until the model year 2017 when the G range tires were installed as a standard tire. The sad thing about the E range tires on these older rigs is, Keystone derated the 7,000 pound axle to 6750 lbs, just so the 3420 lb rated Marathons would be legal. With the G614's, the same axle would be fully rated to 7,000 pounds. We've been running the G614's since 2013 and have had no issues related to the tire size, and if we had not bought the rig off the lot and had ordered it, it would have been ordered with the G614 tires installed.

The G614s don't meet the minimum RVIA recommendation for fitment on vehicle certified 7000# axles. It's probably why you'll start seeing the ST235/80R16 LRG or ST235/85R16 LRF as Original equipment tires on 7000# axles.