I bought my hitch from etrailer.com that didn't require the ridiculous cutting of the bumper cover like the OEM hitch and installed it myself in an evening. $1000 for labor is just insane.

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2008 X5 3.0 - Sapphire Black Metallic, Tobacco leather, Sport, Premium, Cold Weather
2002 E39 M5 - Carbon Black Metallic, Black leather
2013 S1000RR - Insanely fast!!