Just seen this track review of the Racetec K3's on 44 teeth, see the comment at the end re the M7RR's..
http://44teeth.com/metzeler-racetec-rr-k3-review/
http://44teeth.com/metzeler-racetec-rr-k3-review/
I'll be interested to see how the M7RR compares to the new S21 Evo.
M7 is by far best road tyre I've used wet or dry defo in my group of riders the m 7 grips second to non also decent mileage
Ive just gone to the sportsmarts2 as i prefer the u shape
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