1991 SPEED0 GEAR USAGE CHART i NBII CONTINUED D D A R G R G D I E I E A V A V A P TIRE SIZE AXLE TRANS E R E R T N R P225 75R15 EXC GZ3 P225 70HR15 nn P235 7OVR15 MD8 u J P225 75R15 W 623 P225 YOHRI5 nn P235 7OVR15 3 23 MD8 P225 70HR15 EXC 623 n C P235 7OVR15 A MD8 P225 7OHR15 W 623 P235 7OVR15 3 42 MD8 uv ul 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17B 4 337 4 24 8 92