I have looked at the wide base Michelin. You will need a new wheel, maybe new wheel studs. The advantage would be less weight. Michelin says the weight savings is 225 lbs each side so 450 pounds total. If you lose a tire you could limp in with duals. But if we lose a steer tire we aren't going anywhere...huh!
I don't know how a wide base would ride, but the 445/50R22.5 needs more air pressure to carry the same weight as a dual set up. Example: 80psi on a 295/75R225 carries 18160 per axle. A 445/50R22.5 Michelin carries 18,180 at 105 psi.
The Michelin 445/50R22.5 would also affect your rear end ratio and speedo by approxomately 3%. The 445/50R22.5 is 17.1 inches wide (not tread width, but sidewall to sidewall), the 295/75R22.5 is 10.9 so the duals have more tread on the ground.
Bridgestone builds it also, to match the BS's on the front!
Still, I think it would have the "Hot Rod Look"
. Perfect for the 34' Alpine
I'd even add some wheelie bars
. I may show up with these one day
. Wonder if Patty would notice