Decided to try a tire I've been thinking about for a while. BFG KM2 255/85/16. I purchased one first to check clearances and whether it would fit the stock spare location. No problems. E rated to carry over 3400lbs per tire which leaves a healthy safety margin on my 7800 lb. van. About 1.5" taller than the 265/75/16 I was running.
2008 E350 6.0L Sportsmobile 2WD Camburg Lift
2008 KTM 300xcw
2016 KTM 1190 Adventure R