Kevin, We have towed race car haulers, originally with toter-homes and more recently wth a coach tens of thousands of miles. they ranged anywhere from 70 to 82'. Never been stopped. For awhile we used semi's and had more scrutiny(weigh stations, saftey checks etc.) than with anything else. Present length is 82' and never a problem so far. Have not towed in Calif. for 10 yr. though. We go the speed limit or under and stay in our lane as much as possible.