Good points Bob and rbpru,
I looked at the Surveyor 192T which has the identical floor plan as the Jayco and it does have tandem axels. It's also over 300# heavier and 1-1/2 feet longer so I'm guessing that the 191T was below their standard weight/length for adding tandem axles.
Cost isn't an issue for me and I am looking at TTs in this weight range for a number of reasons, tow vehicle capacity being one of them (the other being storage).
Floor plan is my big sticking point right now, if I didn't mind the the tighter space and layout of the 192T it would be a non issue.
The Jayco and 192T are both at 3600+ pounds where the 191T is 3300+ pounds, that's over your 2500# weight preference for tandem axles Bob.
