General Munich bars / beer halls:

Augustiner Stammhaus 
I remember being in here as a neutral before a Bayern vs Bochum game years ago and was pleasantly surprised to find two groups of fans from the respective clubs exchanging chants and songs across the tables without the remotest hint of any trouble. Good beer and solid German food, as you’d expect in a traditional ‘beer hall’ type of bar/restaurant. In the pedestrian zone, on the way from the main station to the main Marienplatz central square.

Hofbräuhaus 
Very touristy, but a must-do when in Munich. Probably the most famous beer hall in the world. Just around the corner from the Marienplatz central square. In fact, it's from in front of the New Town Hall on Marienplatz that the Munich tourist board offer a guided walk to and around the Hofbräuhaus, with a Maß (one litre) of beer included.

Biergarten am Viktualienmarkt
Beer garden with seating for 800 on Viktualienmarkt, just round the corner from Marienplatz. All six of Munich's main breweries take turns at providing the beer here, and you can also eat from a menu of traditional Bavarian fare. The chestnut trees, which were just saplings when the beer garden opened in 1970, provide welcome shade on hot, sunny days. As the website linked to above is in German only, here's the relevant page on Tripadvisor.

1860 bars

Two 1860 bars suggested by the website dieblaue24.com:

Löwenstüberl
Address: Grünwalder Straße 114, 81547 München, at the club premises, a 20-minute walk from the stadium. The club shop is next door. Shows all 1860 games live on 6 big screens. Photos and reviews auto-translated into English on Google here.

Gaststätte Hans Mielich
Address: Hans Mielich Str. 22, 81543 München. A 12-minute walk from the stadium. TV, beer and pub food. Photos and reviews auto-translated into English on Google here.

Football pubs

Stadion an der Schleißheimer Straße
Address: Schleißheimer Straße 82, 80797 München. A 20-minute walk from the main station. Claims to be one of the best-kown football pubs in Germany. Shows all 1860 and Bayern games. Some seats on a small 'grandstand'.

Sappralot
Adresse: Donnersberger Straße 37, 80634 München. A 30-minute walk from the main station. Traditional German pub/restaurant.
Shows all 1860 and Bayern games.