Radar should be 25m yes (perhaps even 30m in BTB?). But they also need to fix the current radar: i have had multiple times where according to the radar there should be an enemie close in front of me (behind a wall or ditch), while in reality he was behind me. That is a realy annoying bug in the radar.
Not only is the current radar range too small (however I saw a setting for custom games to change the inner circle range of the radar? Maybe it’s incorrectly tuned right now by 343i?) the server tick rate is so slow the radar is horribly inaccurate in tense situations.