My (new/old) 79 Holiday Rambler 27 is still sitting on 16.5 bias ply tires (all 6 less than a year old). I intend to budget for 6 radial tires to replace them (better ride and improve fuel economy).I am looking for a consensus of opinion for my quest...
pnichols wrote:When going down the road, the work to overcome wind resistance is not related to the diameter of the tires and/or what mechanical gear the engine is in.A vacuum gage will read the same for the same RV on the same stretch of road, at th...
Wasn't my intention to debate tire sizes. A simple vacuum gauge can make my point. I will be using a tire in diameter close to what was originally recommended on a 16" wheel and spend my time working on the VE of the engine to increase fuel economy o...
I would only add that increasing tire size can adversely effect fuel economy. Increasing tire size in effect loads the engine more at a given speed. It has the same effect as reducing the axle ratio which the engine sees as a higher load. All of this...
Good point on the 17" Brian (I think I knew that had I thought more). Springs and chassis become the limit. 16s are much easier to come by than 17s (on the road).Pretty sure I can get some factory wheels off a newer E350 that originally used radials....
Just a word of advice from someone who has bought and sold a lot of boats and a few less RVs in my life. Believe no one when purchasing. If there are no records (receipts) to back up all the claims the seller is making then do one of 2 things. What y...
