Installing Rear Wheel Weights (All-Wheel Steer Tractors) IMPORTANT: Avoid damage! To avoid damage to axle, be sure to install weight mounting hardware as shown. 23x10.50-12 Tires With BM17972 Weight BM17972 is a 23 kg (50 lb) Weight. You must also order BM18094 attaching hardware when using one weight and BM18089 attaching hardware when using two weights. M71771 A - One Weight B - Two Weights Install weight(s) as shown. Cut off any excess threads on bolts. 23x8.50-12 Tires With BM17972 Weight BM17972 is a 23 kg (50 lb) Weight. You must also order BM18094 attaching hardware when using one weight and BM18089 attaching hardware when using two weights. M71771 49