I got in a car crash (someone crossed the freeway without looking while I was on it) this spring with my MTB hanging on a frame rack on the back of my car. The bike (2016 Rocky Mountain Altitude 730 alu.) swung forward, hitting the rack, leaving a big dent in the down tube. The down tube largely sees tensile forces, so it’d be hard to believe that it is highly prone to failure. How safe is it to ride for another year or two? Any mechanical engineers in here? Anyone with similar experience?