The Suzuki Gixxer 155, with a seat height of 795 mm, can be manageable for a 6 ft tall rider, although it may feel slightly compact. The bike's overall dimensions, including a ground clearance of 160 mm and a wheelbase of 1335 mm, suggest it is designed to be agile and comfortable for a variety of rider heights. However, taller riders might find the riding position slightly more cramped compared to shorter riders.