We have a DP and it is 34.5' actual and the wheelbase is only 208". It also has a 55 degree wheel cut which makes it turn very sharp. I had a 31' but was actually 33.5' long front engine gas RV with a 45 degree wheel cut and a 228" wheelbase. It had a very large turning radius and a massive tail swing. On a gas RV I would opt for the longer wheelbase even though the turning radius is so poor just to get the stability required. On a DP with air ride it isn't so much of a problem.