Wheelbase

n. distance from center of hub of front wheel to center of hub of back wheel (Automobile)

For the British TV series of the same name see Wheelbase (BBC). In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.
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Noun
1. the distance from the center of a car's front wheel to the rear axle
(hypernym) distance

The distance from the center line of the front axle to the center line of the rear axle. (GSA2)

The distance between the centres of two consecutive wheels. In the case of vehicles with more than two axles or equivalent systems, the successive wheelbases are all given in the order front to rear of the vehicle. 1/12/79

Distance comprise entre les centres de deux roues consécutives. Lorsqu'il s'agit de véhicules ayant plus de deux axes ou dispositifs analogues les empattements successifs sont tous indiqués en allant de l'avant vers l'arrière du véhicule. 1/12/79