A person with a height of 5'11" should generally be able to ride a Royal Enfield Meteor comfortably. The Royal Enfield Meteor has a seat height of around 765 mm (30 inches), which is relatively accessible for a wide range of riders.
Some riders who are taller or shorter than average may have personal preferences for specific bike modifications or adjustments, such as handlebar risers, seat modifications, or footpeg repositioning, to enhance their comfort on any motorcycle, including the Royal Enfield Meteor.
Before purchasing a motorcycle, it's always recommended to visit a dealership or sit on the bike to assess your own comfort level. Take a test ride if possible to get a better sense of how you fit on the motorcycle and how it feels to ride. This will help you determine if the Royal Enfield Meteor or any other motorcycle suits your comfort requirements and riding style.