went to get some coffee pods from storage this AM, found the Blackwing somewhat leaning to one side in the garage
there was a large screw in the outer shoulder on the driver rear tire. Not repairable for sure based on location, totally flat
easy solution was to throw the winter shoes on (PS4 A/S) -- I also deep cleaned each corner while I had each wheel off & car in air & reapplied ceramic coating to the calipers.
Last thing to do later today is tighten down a V band on the exhaust system to resolve a small leak. Could not reach it this morning and ran out of time