Rain Vibration and cold endurance

[Alan001]

Hello thankyou to all who read this . I am obsessing with attaining my first Rolex . Many concerns, are about how realistic it would be for me to wear year around especially while riding my Harley . My bike is vintage ,it vibrates a lot ,and has Springer front suspension . Also rain is another concern, I have about wearing a Rolex ,on a rough riding, vibrating machine ,in extreme rain, and sometimes near freezing conditions . I am worried about buying used so the models I can realisticaly consider are limited . I would like a new 40 mm model am wondering if the models without a screw down crown are waterproof in rain at 120 km and if the shaky ride sometimes even very blunt bumps will hurt a Datejust Tunograph Explorer Millgaus . Etc . I can't afford a new Daytona or Sub although I am interested in how well they operate in extremes . Please help me determine if wearing a Rolex year round and on a vintage Harley is abusing the timepiece or a realistic expectation .