Vehicle geometry — wheelbase definition In automotive terminology, what is meant by the wheelbase of a vehicle?

Introduction / Context:
Wheelbase is a core dimensional parameter influencing ride comfort, high-speed stability, turning radius, and cabin packaging. It is routinely cited in vehicle specifications and used in alignment equipment setup.

Given Data / Assumptions:

• Standard road vehicle with front and rear axle centers.
• Measurements taken on level ground with specified tyre pressures.
• No special steering angles applied during measurement.

Concept / Approach:
Wheelbase is specifically the longitudinal distance between the front axle centerline and the rear axle centerline, effectively the distance between the centers of the front and rear wheels on the same side (or averaged across). It is distinct from track width (lateral distance between left and right wheels on an axle) and overall vehicle length.

Step-by-Step Solution:
Identify the two axle centerlines (front and rear).Measure the longitudinal distance between these lines.That measurement defines the wheelbase.

Verification / Alternative check:
Consult manufacturer specifications; wheel alignment machines request wheelbase and track for geometry calculations.

Why Other Options Are Wrong:
Option b and c define track (front or rear), not wheelbase.

Option d is overall length, a different specification.

Option e again is track width, not wheelbase.

Common Pitfalls:
Confusing wheelbase with the distance between wheel centers on opposite sides; misinterpreting staggered axle positions on specialty vehicles or trailers.

Final Answer:
distance between the centres of the front and rear wheels