6.50x16 would be the 'heavy duty' option [4,600GVW] - standard was 6.70x15 [4,000-4,300GVW], and 'extra heavy duty' was 7x17.5 [5,000GVW]

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics