Wheelchair accessible minivans, SUVs, cars & trucks dimension chart for BraunAbility, Freedom Motors (FMI), & Vantage Mobility (VMI) A good fit is incredibly important for the safety and comfort of all passengers. Today's mobility products come in an array of sizes, weights, and lengths. Be sure to measure your chair and rider to ensure there is plenty of head and legroom, a wide and strong enough ramp for the chair weight and width, and all passengers are comfortably seated. Rear-entry and manual operation ramps are generally wider but require an operator or caregiver while side-entry ramp allows for greater interior maneuvering space. An in-floor ramp is great for keeping dirt out of the vehicle and the ramp tucked away but might not be ideal for colder climates that use salt during winter months or frequent beachgoers. below is a guide to get you started on selecting your preference.