Same problem in arma2 but now we have hightech tanks and in the future, the tanks still have not enough power and torque. ATM all good tanks have 1500hp+, torque of 4500+ Nm (merkava have 5000nm+)
On a straight on streets, ok 80kmh should be okay. But in rough terrain? Or up on a hill or even little uphill? come one, this is just a joke. Going uphill with 6-9kmh is unbeliveable, unrealistic and not very game balancing. For what do i have tracks and so high torque?
Beside this problem: Give tanks more active defense. Smoke, wow, what a futuristic defense.