towing with suv???

I think the 80% rule (if that's what we're calling it) is born out the fact that there is no standard for defining towing capacities among the different manufactures. There may be a standard for a given manufacture but that only helps when looking at a specific manufacturer. As towing bragging rights become more common I suspect tow-offs (magazine comparison tests) will become more common also. Until a uniform standard is created all we can do it share our experiences and make decisions based upon them.