4.1 Testing method using an instrumented passenger car
4.1.1 Principle
4.1.2 Equipment
4.1.2.1 Vehicle
4.1.2.2 Measuring equipment
4.1.3 Conditioning of the test track and wetting condition
4.1.4 Tyres and rims
4.1.4.1 Tyre preparation and break-in
4.1.4.2 Tyre load
4.1.4.3 Tyre inflation pressure
4.1.5 Procedure
4.1.5.1 Test run
4.1.5.2 Test cycle
EXAMPLES:
4.1.6 Processing of measurement results
4.1.6.1 Calculation of the average deceleration ( AD )
4.1.6.2 Validation of results
4.1.6.3 Calculation of adjusted average deceleration ( Ra )
4.1.6.4 Calculation of the braking force coefficient (BFC)
4.1.6.5 Calculation of the wet grip index of the candidate tyre...
4.1.7 Wet grip performance comparison between a candidate tyre and a...
4.1.7.1 General
4.1.7.2 Principle of the approach
4.1.7.3 Storage and preservation
4.1.7.4 Replacement of reference tyres and control tyres