We had a warm day yesterday (in the high 70s) and for some reason my garage is a heat sink. It was 73 degrees when I checked this morning, while my house was between 67 and 69 degrees (downstairs/upstairs). So that must have something to do with it, too.
I did not precondition. No need to.
It got pretty stuffy in the car because the aircon was off. But I did have the fan going.
Note that BMW recommends a tire pressure of 32 ppsi all around. I put an extra 1 ppsi in mine and during the test they got up to around 35.9-36.2 ppsi.
I should also add there was no wind and it was and is clear, dry and slightly cloudy outside.
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Previously: 2014 i8; 2013 650i convertible; 2013 650i Gran Coupe; 2013 X1; 2010 550i GT; 2010 535 GT; 2010 Z4 3.5; 2008 535ixt; 2007 M6 convertible; 2006 650i convertible; 1996 Z3; 1980 633CSi; 1978 630CS; 1972 3.0CS; 1971 Bavaria. (1971; 1979-2005 & 2017 - ? -- the Mercedes years.)
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