[A/S] advice on tow vehicle & A/S lengths

[claudette beaulieu <cjbeau@xxxxxxxxxxxxxx>]

I recently joined your list, hoping I could learn abit about Airstreams 
before actually getting one.  I am going to be using the trailer for 
weekends showing my dogs.  I really don't want a MH, have always admired 
the Airstreams and hoped to have one someday.

My questions are around wheelbase length of tow vehicles & length of 
trailer.  I would like to get a 28 foot, either Classic or Safari, and 
am wondering if I could safely tow it with a vehicle with a wheelbase of 
138 inches (am considering the Ford E350 full size van).

I've seen some guidelines on the net, & they seem to indicate that a 
wheelbase of 110 inches is the minimum for the first 20 feet of trailer, 
then you need an additional 4 inches per foot of trailer after 20 feet. 
   Using this formula, I'm about 4 inches or so too short.  Is this a 
hard and fast rule?

Any advice or thoughts would be appreciated.  Thanks!
Claudette