I measured mine (all measurements are of the chassis and wheels, no BOE):
Metal body is 5" long by 3.25" wide
Top deck of metal is 2" off the ground
Large plastic wheels w/o treads are 2.6" diameter and .3" thick at the thickest part (rim)
The center of the large wheel is 1" back from the front
The closest point of the large wheel is .45" laterally from the body of the robot
The small wheel is 1" in diameter
The small wheel is .125" from the back of the robot
The metal is .06" thick
Comments
Metal body is 5" long by 3.25" wide
Top deck of metal is 2" off the ground
Large plastic wheels w/o treads are 2.6" diameter and .3" thick at the thickest part (rim)
The center of the large wheel is 1" back from the front
The closest point of the large wheel is .45" laterally from the body of the robot
The small wheel is 1" in diameter
The small wheel is .125" from the back of the robot
The metal is .06" thick