One and one half inches from the bottom as in previous reply. Total length, tip to tip is 22 and 3/4 inches. Second "S" directly in the middle centered under the wing. Most letters are 2 and 3/4 inches center to center. The only difference is the "I". 2 and one half inches center to center from the "F" to the "I" and the same from the "I" to the "R". All this measured on a 2007 Red Roadster. Good Luck!!