I don't know about the tires you're buying, but my Nokian M+G's needed breaking in. When I first got them I put them on and went hot dogging around the neighborhood on dry pavement. After a 5-10 minute ride I noticed a large number of studs were displaced and generally messed-up. I was lucky and caught it in time. I was able to take a small screwdriver and reseat the studs. Then, at the advice of my lbs I inflated the tires to 60 psi and rode them for the recommended 30 miles. Now I'm on my second winter of riding them at 45 psi and they've worked beautifully and I haven't lost a stud.
more cops have been killed by donuts than guns in chicago it is a medical fact ask any doctor.