When we discovered on the last day of our trip that the insides of the two front tires on the car we had rented via Turo.com were bald with the steel belt showing, we felt thankful to still be here and couldn't believe we were in this situation. The host of the car had been on the Turo site for a long time and had rented his car out many times...maybe too many times. We drove over 1,000 miles on steep grade highways with limited shoulders to pull off onto and few guardrails for safety throughout the state of Colorado. We also took scenic byways with sheer drop-offs, such as the Million Dollar Highway. Our trip ended by rerouting to a larger highway in order to locate a tire store. Finally, 5 tire stores and half the day later, we spoke with the assistant manager of a Discount Tire store. He advised us that the two front tires could blow out at any time and that the two rear tires were in the red danger zone, according to Colorado state law. We were able to get in touch with the host who paid for 4 new tires to be installed right then. The host offered to give us a discount on our rental for our trouble, but did not. We contacted Turo, but their only offer was to give us a $50. credit toward our next rental on Turo.com, which we have no desire to do. It is clear to us that policy and regulations need a good makeover. Please be aware that each host on the Turo.com site operates independently and may or may not take the full responsibility of renting out their car to the public with the best safety precautions. Be smart, stay safe.