Is your AC on?
If not, then it's too low.
Ac on 650rpm
Ac off 500rpm (which is the small white line in your pic)
2003 BMW 540i [Sterling Gray / Gray]
[Msport] [Mods from A-Z] [Two-Tone Interior]
PM for info
1 Set of BMW E39 OEM HighPolished Black Interior Trim $265 Shipped
1 Set of BMW E39 OEM Individual Gray Leather Interior Trim $295 Shipped
E38 OEM RR Quarter Window Sun Shade $70 Shipped