成品性能指标(english)..doc

Appendix The finished tyre performance standard 1. the standard for balancing and uniformity 1.1 the test method: The tyre dynamic balancing test method: QB／T 10001-2012 The tyre uniformity test method: QB／T 10002-2012 1.2 the testing clssifications: size The test pressure for dynamic balancer (kPa) The class for dynamic balancing (A/B) (g) The test pressure for uniformity (kPa) The class for uniformity（A/B） Radial force variation ≤(N) Radial harmonic force ≤ (N) Lateral force variation ≤ (N) ≤(N) conicity≤(N) The passenger car with the cross section width at 235 or under 200 30/60 200 110 80 80 70 The passenger car with cross section width at 245 or above 200 40/70 200 130 95 100 90 The light truck tyre with 8PR or under 200 60/90 300 150 110 120 100 The light truck tyre with 10PR or above 200 70/110 450 180 130 140 120 2．The finished tyre should meet the following standard: The tyre size designation,dimensions, standard rims and load capacity should meet the specificatios as per the CAS( China Association for standardization), ETRTO(European tyre rim technical organisation) and TRA( tyre and rim association inc.). 2.1 the passenger car radial tyre: 2.1.1 Product standard: GB9743-2007 《Passenger car tyres 》 GB／T 2978-2008《Size designation,dimensions,inflation pressure and load capacity for passenger car tyres》 ETRTO TRA 2.1.2 Tyre endurance and low inflation pressure performance: GB／T 4502-2009 FMVSS NO.139 Tyre endurance≥34h low inflation pressure performance≥1.5h 2.1.3 High speed performance : GB／T 4502-2009 FMVSS NO.139 ECE R30 Test phase test speed(km/h) The test time(min) The test speed(km/h) The test time(min) The passenger car tyre for the speed symbol L～W The passenger car for the speed symbol Y 1 From zero to initial test speeda 10 0～260 10 2 Initial test speed 10 260 20 3 Initial speed +10 10 270 10 4 Initial test speed +20 10 280 10 5 Initial test speed +30 10 290 10 6 Initial test