The one thing you did not mention is if you have a receiver hitch or not. If you do, check out Harbor Freight. They have a receiver bike rack for like $20-30. I bought this but returned it bc I carried 2 bikes on it and they got beat up pretty bad, along with the bumper of the X, but it would probably do OK with 1 bike.

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2001 X5 3.0i (PP/WP/AP) Traded at 213K miles
RARE White on Black - Why does everyone get Tan??
First E53 with 215s on XOutpost!!