3.16.4.4. Second test speed: speed corresponding to the speed symbol less 10 km/h; 3.16.4.4.1. Duration of the second step = 10 min. 3.16.4.5. Final test speed: speed corresponding to the speed symbol: 3.16.4.5.1. Duration of the final step = 30 min. 3.16.4.6. Total test duration: 1 h. 3.16.4.7. Endurance test programme Load placed on the wheel as a percentage of the load speed corresponding to the load index Tyre speed category Radial-ply1 Load index symbol km.h-1 7 h. 16 h. 24 h. 122 or more F 32 G 40 J 48 K 56 L 64 M 72 66 % 84 % 101 % 121 or less F 32 G 40 J 48 K 56 L 64 70 % 88 % 106 % 4 h. 6 h. M 80 75 % 97 % 114 % N 88 75 % 97 % 114 % P 96 75 % 97 % 114 % Special use tyres (marked "ET" or "ML" or "MPT") should be tested at a speed equal to 85 per cent of the speed prescribed for equivalent normal tyres.
3.16.4.4. Second test speed: speed corresponding to the speed symbol less 10 km/h; 3.16.4.4.1. Duration of the second step = 10 min. 3.16.4.5. Final test speed: speed corresponding to the speed symbol: 3.16.4.5.1. Duration of the final step = 30 min. 3.16.4.6. Total test duration: 1 h. 3.16.4.7. Endurance test programme Load index Tyre speed category symbol speed Load placed on the wheel as a percentage of the load corresponding to the load index Radial-ply1 km.h-1 7 h. 16 h. 24 h. 122 or more F G J K L M 32 40 48 56 64 72 66 % 84 % 101 % 121 or less F G J K 32 40 48 56 L M N P 64 80 88 96 70 % 4 h. 75 % 75 % 75 % 88 % 6 h. 97 % 97 % 97 % 106 % 114 % 114 % 114 % Special use tyres (marked "ET" or "ML" or "MPT") should be tested at a speed equal to 85 per cent of the speed prescribed for equivalent normal tyres.
GRRF-84-12e.docx