45 miles? Most likely you're just fine. I think the manual specifies something like 30 miles or so, but there's usually plenty of margin in that sort of thing.

On the other hand, the original poster mentioned moving and towing behind the moving van, which to me implies a distance considerably larger than 45 mi - 45 mi most people would just drive it over rather than use dollies. I wouldn't tow an auto car say 500 mi or so.

Bram