2020 M3P with roughly 800 miles. Stock 20” with stock tires. Lowered 1” all around. Normal driving, mostly on back roads 50 mph, about 10-15 miles on freeway 65mph and about a dozen or so moderate pulls to 60ish, climate on auto @73. Outside temps mid 70s. SOH went from 90% to 49% in 3 days of...