I'm running a HED Jet+ Black Disc on an older Trek and have a clearance issue with wide tires rubbing on the chainstay. I can fit a 23mm Michelin Pro 4 Comp Service Course which is 25.4mm wide x 20mm height (measured) but I had an issue with a [wider] GP TT 25mm tire. I'd probably like to run a GP5000 25mm in the back if I'm able to. The news is that a GP5000 25mm is not as large as older Conti tires so I'm thinking I might have a shot.

---

-------------------
Madison photographer Timothy Hughes | Instagram