Dinghy weight.

We have a 2005 31' Class C on a 2004 E450 chassis and tow a 3000 lb Chev. 4X4 Tracker. I added the 5 star tuner also. We routinely go up 6-7% grades and using the OD On/Off button keep the RPM's in the 3000-3400 RPM range. Gives us about 60-62 mph for 5-6% grades. She will shift as the speed hits about 50 mph and hold it the rest of the climb on steeper grades 7-8%. On a real steep climb we might hit 40 mph but those are really rare. The car was weighed on a Cat scale so we know the weight is accurate. A lot of states require brakes so we had the Tracker wired with lights and a battery charge line. Will be adding brakes in the spring. Cost us about .5 mpg when towing on flat roads.

Dave