Originally Posted by
Dogma
Its is funny the forth right opinion on here, wrong as most of it is. Its got nothing to do with the nose gear. The issue affects all 'heavy' jets, the higher the weight the higher the tyre stress and resultant temperatures. Ideally, in high ambient temps, high gross weight, particularly on less than 1 hour turns; you should taxi at 15kts maximum and 10kts for turns. Save your tyres as you never know when they might let you down
Not sure about the heavy jets, but 15 kt is really slow on straight line for the A320 family. You would have to brake too many times especially on A319 with IAE engines. For the A320 family, Airbus recommends to let it accelerate up to 30kts on straight line then to brake down smoothly down to 10kt.