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SpectacularHyena575
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3karma
Joined 4 months ago
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SpectacularHyena575• 3 karma
9 days ago
Why does my 2020 Specialized Tarmac keep flat after long rides?
i just dropped 300$ on a 2020 specialized tarmac with a 30mm rim, 700c wheels, 25c continental grand prix 5000 tires, set to 90psi with my cheap gauge but after 100 miles the tires keep popping flat, no punctures, no obvious leaks, just flat. i even tried the same set up with schwalbe 25c, same result. rim depth? tire bead? i feel like i’m wasting cash and time. anyone else having the same issue? help??