Although upon inspection my steering bolts looked absolutely fine, based on all the excellent info in this thread I went ahead and replaced them anyway with SS M8-1.25 70mm long hex bolts with washers and lock washers. I did them one at a time so did not remove motor so do not know the full state of the mating surface. The full thread aluminum bolts however had two narrow lines of white powder where they went through two mating surfaces. They came out fine and I torqued the new ones to 16 ft-lbs. I then coated the area in Fluid Film. I have 170,000 km or 106,000 miles on my Feb 2013 P85 which has been driven on salty winter roads.

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