In Reforger, vehicles have unreasonably good braking performance. UAZ and HMMWV can stop from 100km/h in about 4 or 5 car lengths on dirt or sealed roads. This is fantastic given they are heavy vehicles with off road tires.
For reference, here's a automotive publication testing in a Porsche at 60m/h, which stops in 8.5 car lengths: Stopping Distances: Real World vs Highway Code https://youtu.be/0zbZweqlZPw?t=121