2010 Toyota Venza Owners Manual - Page 271

2-5. Driving information Hitch Trailer hitch assemblies have different weight capacities established by the hitch manufacturer. Even though the vehicle may be rated for towing a higher weight, the operator must never exceed the maximum weight rating specified for the trailer hitch. Selecting trailer ball 2 Use the correct trailer ball for your application. When driving Trailer ball load rating Matches or exceeds the gross trailer weight rating of the trailer. Ball diameter Matches the size of the trailer coupler. Most couplers are stamped with the required trailer ball size. Shank length Protrudes beyond the bottom of the lock washer and nut at least 2 threads. Shank diameter Matches the ball mount hole diameter size. 247