I think Sumdud is talking abt the ground pressure issue. U must understand, a modern day MBT with its up-gun, up-armour and the sophisticated designs of electronic systems on board the vehicles, a MBT can easily weigh around 50 tonnes. Even Chinese and Russian vehicles, considerably lighter than their western counterparts, are getting heavier. Thus the effective ground pressure is getting larger. Thus roads or even small rural bridges that are constructed of weaker materials can not tolerate such high ground pressure will definitely break or collapse. This will not affect tracked vehicles but it will be a disaster to wheeled vehicles as the badly destroyed road will hinder their mobility. Thats why usually a lighter tank or wheeled IFV are prefered over heavy armour when engaged in things like street fighting.
For example, in South east Asian nations, the climate also affects the usage of armour vehicles. Due to frequent and prolong seasonal raining periods, our effective soil compactness and ground pressure is low. Thus, this restricts most SEA nations to use light tanks that weight no more than 30 tonnes. Thus u see most SEA nations use things like AMX-13, Scropion tanks, V-150, Simbas and Bionix IFV, with a weight of no more than 25 tonnes.
:roll:
