20" - tire width is 3.0'. Adult Electric Trike Tricycle 750W 14.5AH Lithium Battery - run time is 35-60 miles, - 6to 8 hrs charging time . Comes with front a back Insulated basket. almost New used 2 times. Goes up to 16 MPH., has lights, signal lights and horn. Asking $1000.00 Dave show contact info