Joined: Mar 2007
Posts: 175
Likes: 76
From: San Luis Obispo, CA
Bikes: 1988 Bottecchia Professional (for Eroica), 2011 Ridley Noah ISP (retired), 2020 Soma Fog Cutter (daily commuter), 2021 Ridley Kanzo Adventure (gravel), 2022 Tideace Aero (main road bike).
23mm tires better not be dead anytime soon -- my 2011 Ridley Noah can't run most 25s. That is, if they actually measure 25mm I can run them, but many brands are usually closer to 26mm and wider at pressure. 25mm Continental GP 5000s seem to be OK (25.6 on my caliper at 7 bar), but I sometimes get a bit of rub on the seat stays when climbing out of the saddle.