Originally Posted by sailingfun

The issue with a single axle truck from a performance standpoint has nothing to do with landing. It’s a abort at V1 where it comes into play limiting takeoff performance.
Airlines that don’t need that performance much prefer a single axle truck for lower maintenance expenses. The other issue is load bearing. Due to the footprint AA’s 321’s are limited to 15 knots taxi speed at LGA. They were damaging the taxiways in turns.