[bushpilot]

Originally Posted by DeepVee

It says the axle is "steerable" so I wonder if it's a maneuverability thing. Could he lower the extra axle and raise the duals to steer into a tight spot?

both of the rear duels are drive axles (open diff's until you lock each diff or lock both axles together...ala 8 wheel drive).

the (rear most) TAG axle is weight bearing (or usually it is), I doubt this tag has brakes - but I suppose it could.

lowering that rear most tag would put more load/leverage on the front axle (as someone else pointed out) - so unless that front axle has been upgraded / optioned to a higher weight capacity you could easily exceed the rated weight for the front axle.