General, I researched this topic quite extensively before I bought a zt as I have a DR vac: what I found is that with the exception of the Exmark with the EZT, forgot the model, towing 2-300 lbs was not a concern, tongue weight was but a few reps told me that the issue was the front coming up not the machine being short on power, the solution: add weights but I doubt very much that you will have to.
Bottom line , tow on-be happy. :biggrin: