Bridgestone S21: Review

    The S21 is the tire that will take you to the grocery store and track for multiple seasons.

    Bridgestone developed the S21 to achieve what every commuter/canyon carver looks for—a tire that can hold its own on a track, while still being reliable in the wet and not needing replacement every 3,000 miles.

    Claiming better handling in the dry and a 30% increase in life over its predecessor, the S20 Evo, the S21 is a step forward in performance for Bridgestone. These advances have been realized through Bridgestone’s Ultimat Eye. In Bridgestone’s words, “ULTIMAT EYE™ reproduces highspeed riding conditions in the laboratory that are equivalent to those of an actual vehicle, enabling tire contact surface behavior to be visualized.” This translates to being able to run tires up to 248 MPH with crazy lean angle, while monitoring the behavior of the tire in a controlled setting.

    But what does this mean to us, the laymen? A perfectly controlled environment is not what anyone lives in, and it sure as hell doesn’t describe the rough roads, potholes, highways, cold mornings, and 20 minute commutes I put my tires through. Ultimately, I want a tire that can handle the abuses of day-to-day Pacific Northwest torture AND end a track day sticky, hot, and coated with rubber boogers.

    Is this possible? I think so. Does the S21 do it? Time will tell, but it is off to a very good start. While I make no claims to be a tire expert, or a proficient racer, I will say that I have enjoyed my time on the S21s. With the feeling that you are definitely not on a touring tire, via ample turn-in and ability to warm up quickly, the S21s definitely perform the way of a track-focused tire and prove that whatever money was spent on Ultimat Eye was well worth it for track performance. That being said, after putting them through 2,000 street miles and five track days (equalling roughly 750 miles), I am happy to report that I have plenty of tread left. This is all on a sport bike weighing in at 487 lbs wet, with 100 bhp and my 200 lbs hanging on for dear life.

    The tread life is the key feature that is often speculated, but rarely documented. Below is my experience thus far:

    Zero Miles

    Zero Miles

    50 miles and one track day

    50 miles and one track day

    1000 miles and three track days

    1000 miles and three track days

    2000 miles and five track days.

    2000 miles and five track days.

    This post originally appeared on EssentialMoto.com

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    Comments (4)

    • I got my set for $220 US. I've just put the one season on them so far... We'll see how long they last. I'll update once I get a few more miles.

        3 years ago
    • Multiple seasons? Oo How much is?

        3 years ago
    • Decent miles and grip too. They feel quite at home on the track.

        4 years ago
    • Just put these on my Fireblade project bike, good to see they do some decent miles!!

        4 years ago

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