My M5 is the nr. 11th on my list since I bought my first e-28...all of them had the temp needle reaching 12 'o clock but the M5...I thought at first that the thermostat was locked open, but after a quick test (cabin temp) I realized that it was working fine, same with the fan clutch. I went to the service, and the answer was 'all M5s we service here shows the same'. I also noticed that under stress, it gets a hairthick short of 12:00 o'clock, but immediatly after slowing down a bit, it returns to the 10-11 mark. Poor calibrating maybe? Marcelo '99 Silverstone '91 850i '98 535i