Any bike brand is fine. You just have to be a member of BMWMOA. Furthermore, you do not have to have the bike in the pic. Your face and flag works just the same.I've got a question... maybe one of you can answer this one: Does the bike in our pictures have to be a BMW? I know, seems obvious, BMWMOA and all, but a buddy and I have a long multi-day ride planned for later this year and I'm not going to ride any of the older BMWs but take the new HD instead. We will have a few challenge photo-opps along the way that would be nice to grab. I know I can always use my face/flag combination, but how about my HD/flag combination? I think the rules just state "your bike and your flag".