I can't imagine stuffing my 20-year-old X5 that full of gear, without worrying about the added wear on the interior, or the strain on the suspension, especially. Even though you've kept yours in top condition, I'm sure it's not good for it (nor intended by BMW).

Spend a few bucks, and either rent a small U-haul trailer, or buy a small cargo/utility trailer from Northern Tool, Tractor Supply, Lowe's, Home Depot, etc. and just tow it. Believe me, it'll be better than stuffed full of gear (i.e.=no torn seats, no unpacking for your spare tire).

__________________
01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide