[ANNEX XIII U.K. Braking and deviation test for vehicles with temporary-use spare wheels/tyres
2. BRAKING AND DEVIATION TEST U.K.
2.1. The test shall be carried out with the temporary-use spare wheel/tyre fitted alternately in place of one front wheel and one rear wheel. However, if use of the temporary-use spare wheel/tyre is restricted to a specific axle, the test shall be carried out only with the temporary-use spare wheel/tyre fitted to that axle. U.K.
2.2. The test shall be carried out using the service braking system from an initial speed of 80 km/h with the engine disconnected. U.K.
2.3 The stopping distance shall not exceed the value resulting from the following formula () : U.K.
where
s
=
stopping distance in m
v
=
initial speed of 80 km/h.
The force applied to the control shall not exceed 500 N.
The mean fully developed deceleration during the test shall not be less than 5,8 m s 2 .
2.4. Tests shall be carried out for each of the fitting conditions of temporary-use spare wheels/tyres specified in point 2.1 of this Annex. U.K.
2.5. The prescribed braking performance shall be obtained without any wheel-locking, deviation of the vehicle from its intended course, abnormal vibration, abnormal wear of the tyre during the test or excessive steering correction.] U.K.