Thread: Zipp 303S owners... Please step on in.
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Old 02-17-23, 02:46 PM
  #48  
Sy Reene
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Originally Posted by msu2001la
Since the topic of this thread is the Zipp 303S wheelset, it seems like it would make sense to use Zipp's tire pressure calculator.

For a 205lb rider on an 18lb road bike running 28mm standard tubeless tires on the 303S (21mm i.d. hookless rim), that calculator shows 64.6 PSI front/ 68.76 PSI rear. They suggest 58-61psi for wet conditions.
fwiw, the 205 entry in Silca's calculator was an entry for total system weight -- bike+rider+misc (water bottles). A total system weight of 222lbs (205+18) would have returned even more disparate results.
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