[MrForbes]

Having a wide 4 wheel drive skid steer robot makes for easier turning than a narrow one.

But it affects how easy it is to tip over....look at the distance between where the wheels contact the floor. With a normal configuration, this distance is similar for both directions, while a wide robot has a very short wheelbase, and is much more likely to fall over if bumped near the top, especially if it's top heavy to start with.

Some teams have used this design with an extendable "wheelie bar".