The 4 new tires appear to be LingLong's which I would consider replacing:

Car and Driver 2011: "Consistently finishing last in all of the performance categories, the Ling Longs’ dry autocross performance was so far behind the other tires’ that we had to round its score up to zero to keep it from being negative. Geswein used the words “hard” and “skatey” to describe the Ling Longs’ feel. Their best showing was on the skidpad, where an 0.88-g effort tied the Yokohamas’ for last.
Things got worse in the wet, where slip-and-slide behavior required a conservative effort to stay between the cones. The Ling Longs were a full five seconds off the autocross pace and needed 22 more feet to stop from 50 mph than did the Hankooks." Ling Long L6883 - Car and Driver