I guess that would be down to weight..... 190Kgs I think is the total (you, her, luggage and the make-up bag).

Yamaha specify a paultry 5Kgs per pannier/top box - just silly if you ask me. Who takes just 10Kg's of luggage on a long haul trip ! (cept perhaps that loon on his R1, or Dan walsh)

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Never underestimate the power of stupid people in large groups.