The F1s look brand new, don't know how old they are, but they were on front of a car I just bought. The 555Rs are almost bald, can barely see the trear pattern, but they still hook great, so I would think they would be great for at least a season of racing only, or 1,500-2,000 miles of street use. Asking $150 each for the F1s, and $25 each for the Nittos. Best offers considered. PM me or post up, but I don't check my posts very often. :nonono: