If you want. Anti-Aliasing serves to reduce the 'pixelated' effect. Pretty much all games provides an option for it. It doesn't hit on the performance too much.
I like to keep AA at a low setting because it makes it seem sharper at the same resolution without hurting performance.
Antialiasing is either on or off in BeamNG.drive... No other options. Are you thinking about Anisotropic Filtering?
i most certainly am thank you. anisotropic makes the road far ahead look much less jaggie. even 2x is a nice change.