This is an interesting question. I feel like I'm 80% off road with my DR650 but that may be too high. If I figure hours spent on the bike in a given day, and miles driven in the same day, 80% seems close. I also figure I average around 20 mph for all the miles driven on the bike.
I have been wanting to install an hour meter and do my oil changes based on hours instead of just miles. I change oil and filter every 1000 miles.
Be the bullet...