Your link supports the claim that "trucks cause exponentially more road damage than passenger vehicles"; it does not support your claim that "almost all of the wear is caused by large commercial trucks" or "passenger cars cause very little road wear".

In San Francisco, the Treasurer estimated 45,000 TNC vehicles in operation compared to just 1,800 taxis. That's an enormous increase in car hail traffic, and one that I claim has a substantial maintenance impact absent evidence to the contrary.

http://www.sfexaminer.com/45000-uber-lyft-drivers-may-now-op...