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As stated above it is condition based. When I track my car 80 mins on track knocks off about 3,000 miles of oil life on a hot day. You never go for more than 12 months without an oil change regardless of miles.
Since I track my car I pay no attention to the condition based interval and do oil analysis and change oil between 4,000 and 6,000 miles based on the number of track days I do. Because of heat I run a slightly thicker oil based on a recommendation by the good folks at Bimmerworld. BTW the analysis shows even with track days I can probably go 10,000 miles safely with Motul 8100 Xcess 5w40 but oil is cheap insurance especially when you buy in bulk and DIY.
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