It seems like I have read the shaking involved on a motorcycle can be rough on auto winding watches. I've had one watch lose a pin and fall off my wrist. Curious what the group here that rides does with a watch while riding. I'm still wearing them if just taking a trip in town. Usually put the watch and phone in a saddle bag if taking a longer trip.
never thought/worried about that ... and never had an issue ... I guess if you "will go all anal", pretty much every activity in your life could be potentially harmful to your watch ... just like life in general is dangerous. For me it was "if the watch can't handle my BMW - it shouldnt have become a watch in the first place" but your bike seems louder/shakier ... have you asked for opinions on the john deere forum ?
I just wear them, except when doing single track. I'm ATGATT so, it is highly unlikely a watch will fall off my wrist while riding.
You could always wear a Speedmaster... the most rigorous trials endured in the history of horology: 1. High temperature: 48 hours at a temperature of 160°F (71°C) followed by 30 minutes at 200°F (93°C). 2. Low temperature: 4 hours at a temperature of 0°F (-18°C). 3. Temperature-Pressure: 15 cycles of heating to 71°C for 45 minutes, followed by cooling to -18°C for 45 minutes at 10−6 atm. 4. Relative humidity: 240 hours at temperatures varying between 68°F and 160°F (20°C and 71°C) in a relative humidity of at least 95%. 5. Oxygen atmosphere: 48 hours in an atmosphere of 100% oxygen at a pressure of 0.35 atm. 6. Shock: Six shocks of 40 G, each 11 milliseconds in duration, in six different directions. 7. Acceleration: From 1 G to 7.25 G within 333 seconds, along an axis parallel to the longitudinal spacecraft axis. 8. Decompression: 90 minutes in a vacuum of 10-6 atm at a temperature of 160°F (71°C) and 30 minutes at 200°F (93°C). 9. High pressure: 1.6 atm for a minimum period of one hour. 10. Vibration: Three cycles of 30 minutes vibration varying from 5 to 2000 Hz. 11. Acoustic noise: 130 db over a frequency range of 40 to 10,000 Hz, duration 30 minutes.