23x10.50-12 Tires With BM17976 Weight BM17976 is a 23 kg (50 lb) plastic coated weight and includes the necessary hardware. Install weight as shown. M71770 · Measurement (A) should be 160 mm (6.3 in.). 23x10.50-12 Tires With BM17972 Weight BM17972 is a 23 kg (50 lb) Weight. You must also order BM18089 attaching hardware when using one weight and BM17977 attaching hardware when using two weights. Install weight(s) as shown: m71770 A - One Weight B - Two Weights · Measurement (C) should be 200 mm (7.9 in.). 26x12.00-12 Tires With BM17976 Weight 46