Any idea why Jayco did tandel axles on this model?

I have a VERY light weight camper (see signature) with a single axle, and I worry every time we go out what would happen if we had a blow out! A double axle lessens the chance of an accident, should one of the tires blow out. Also, the ride of a double axle trailer is steadier. With my tiny Aliner, it's not so important, but if it were any larger, I'd want a double axle for stability.