Artemiz: Hello, I am looking for an off-road racing game that I think I played on Windows 98. The game's maps allowed the player to drive off the main path and I think there was even a mode for just crashing into everyone. It featured a robust physical car damage system for the time with specific parts of the car's driving not functioning properly (For example if the front right part is damaged then accelerating forward would steer the car in a loop clockwise). Many of the vehicles in the game were trucks. Sorry for such a vague description but that is all I remember from playing the game well over 17 years ago.

klessle: You could be looking for Flatout 2. Even if it's not the one you are looking for, give it a try. It contains exactly the feataures you described. It is even available on here, look under sports & racing.
Great game!