SPEEDOMETER GEAR CHARTS A 1985 SPEEDO GEAR USAGE CHART K1 2 3 THM 700 CONTINUED I A D A P TIRE SIZE AXLE TRANS T 4 R P235 75R15 P235 75R15OR P235 75R15XL 7 50 16LT 7 5OR 16LT 7 50R 16LTOOR 3 73 LT215 85R16 LT215 85R16OR LT235 85R16 LT235 85R16OR T 50 16LT 7 50R 16LT 7 5oR lemon 4 10 nn 1 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 52R 1 4 337 SPEEDOMETER GEAR 30 REV 1 88