Salmon are a version of the spotted owl for some, use it to drive whatever you wanted to do before you heard about salmon. Use the ESA like a hammer.
I'm all for salmon recovery. Tires are a problem for sure in some areas, but I personally don't believe it's widespread. For one stream it might be the top reason, for another it's not top 100.
That's one of the big problems is that we tend to offer up one size fits all solutions when the problem is much more complex.