Wis. Admin. Code Trans § Trans 308.11
Current through November 25, 2024
Minimum strength ratings for the coupling and ball for trailers and mobile homes are as follows:
Maximum Gross Wt. | Minimum Ball Diam. | Minimum Ball Bolt Diam. |
2000 lbs ....... | 1-7/8" | 5/8" |
3500 lbs ....... | 2" | 11/18" |
5000 lbs ....... | 2" | 3/4" |
over 5000 lbs ....... | Ball and bolt sizes shall equal or exceed the larger of the above classification. In addition the ball and bolts shall be of sufficient size and strength to prevent collapse or shearing under the actual gross towed weight. | |
Wis. Admin. Code Department of Transportation Trans 308.11