Right now the vehicles top speed are according (or nearly) to there RL maximum road speed (at least i think so). - fair possibility.
But since 90% (possible more) of all the maps are offroad or urban environment (only a rough estimation) and very often you could see vehicle go offroad even if there is a street nearby, i would suggest to take the offroad maximum speed.
The maps are with 4x4km not as big as a real battlefield anyway to slow things down cant be wrong ( imho
I`ll just take the M1A2 Abrams as an example
according to:Speed - Maximum 42 mph (thats ca. 68 km/h)
Speed - Cross Country 30 mph (~ 48 km/h)
Speed - 10% Slope 17 mph
Speed - 60% Slope 4.1 mph
M1 Abrams Main Battle Tank
for the rest its something like this:
BTR80/60 60km/h (it is around 75km/h right now)
BMP3 45km/h (its 69 ingame)
T72/90 45 km/h (62 km/h ingame)
T62 40 km/h (50 km/h at the moment)
Leo2 48km/h (72 km/h ingame)
Challanger2 40 km/h (62 km/h ingame)
Abrams 48 km/h (64 km/h ingame)
what the adequate cross country speed in unknown enemy territory are for the specific vehicles should the MAs know.





