Carl, a friend of mine who rides with our Meetup group Montco Riders is a programmer for Comcast and was as perplexed as I was at how bad the Zumo XT routing is for motorcycling even though it's "made" for just that. There are gps apps like Scenic that do a stellar job at finding twisties but you can't just export the gpz file and expect it to work in Zumo, it will just create it's own route from the waypoints given. So Carl figured out how to export the gpz files that will keep the original route. One thing he forgets to mention in the video is that you need to have the Garmin Drive app installed on your phone. It's free in the app store.
I've been using this method the past couple of months and it works well. Added bonus is that although you can do this with all Zumo's, the XT uses bluetooth communication with the phone so it can be done on the fly. You can create a route in Scenic and send it to the XT while on the road (hopefully pulled over).
I've been using this method the past couple of months and it works well. Added bonus is that although you can do this with all Zumo's, the XT uses bluetooth communication with the phone so it can be done on the fly. You can create a route in Scenic and send it to the XT while on the road (hopefully pulled over).