1. A method of determining a ride height dimension of a vehicle, comprising: determining a set of spherical co-ordinates in three-dimensional space for a first point with respect to a datum point, the first point serving as a reference point for measurement of the ride height dimension of the vehicle; determining a set of spherical co-ordinates in three-dimensional space for a second point with respect to the datum point, the second point being on the vehicle; and computing the ride height dimension of the vehicle from the spherical co-ordinates of the first and second points.