>snip<
I only lost about 1 mpg with this one vs the fiberglass.
For a time I lost 1+mpg with these all cheap terrain tires (they were $105 each new)
>snip<
Hi Cubey. I'm just now getting back to this topic. I got really burned out last night after 12 hours straight on forums, reading and posting and answering emails.
I just found that old reply I wrote off line about a week ago and with some editing I'll post it in a little while.
What SIZE are those 'All Terrain' tires? You should be running 235/85/R16. I am not certain but I think that would be best for your towing too.
Wider tires won't help and shorter tires are going to change your shift speeds which could be a factor in your towing. If you have 235/85/R16s on it we could look a shift speeds which can be altered by adjusting the VRV but I'm going to recommend for now that you don't touch it. Especially if it seems to be shifting at appropriate speeds.
Your truck is a 2 wheel drive, Right?
The first comment you made above, losing 1mpg with this camper. I assume that is NOT while towing and I assume that is combined city and highway mileage? If it's combined cty/hwy then on the highway exclusively it's going to be worse than a 1mpg drop. Either way, I think that 1mpg is significant considering the mpg ranges you should be getting from the truck.
Setting that aside I just looked at the photos you posted of your truck and camper shell.
In terms of air flow or 'wind' resistance THAT IS
A LOT WORSE THAN I ORIGINALLY THOUGHT!
All that I was able to look at before was the tiny icon sized profile photo under your user name in your posts. (I think it's usually called an Avatar) I had based my perception of your airflow resistance issues just on that single side view. Now I see from the close ups
it is much worse than I thought.
You'll be able to see it and understand it too after you read my next post but I have to go through it and do some editing first. Actually I have to spend about 20 minutes on something else before I start editing that