After blowing 1 x transmission and trailer accident, I'm now a firm believer of having more (much more) Tow Vehicle than needed. If it were me, I'd get larger Tow Vehicle or smaller trailer. As mentioned by others, it isn't about towing using calculated math numbers. Its about safe towing.... For example, might be "within spec" using math numbers but add hills and wind resistance and its a major accident (or problem) waiting to happen.... If wondering, normal wind resistance blew my previous tow vehicle's transmission...