Oh I get it... your one of those guys that takes responsibility for his equipment? Imagine that!It is interesting how so many carry on about how they are a business person, not just a driver, until the unpleasant underbelly of the "business" rares it's ugly head. Who doesn't know who is responsible for maintaining their vehicle? It is clearly outlined in every contract I have signed with a carrier. It's called self employment. Ya know that capitalism thingy that's all the rage these days? Rugged Individualism and all of that stuff? This is part of it.
I would expect nothing but to pay for the tow bill. Its my equipment after all...and I am contracted to move the load. Now, if there is an obvious alternative that will work (and still meet ALL of the requirements of the load), then I would want them to pay if they still insisted on a tow. Even in that situation, unless it was an obvious over-reaction from the carrier, I would likely feel responsible for the tow. It is my truck that broke down after all.
If money is tight and I need the carrier to front the tow bill is one thing, but asking them to be completely responsible for the bill is another...imo.