I ran shimano r650 brakes with 28c GP4000 II tyres. Clearance was good.
Do you know what the internal wheel width was with this combination? This is what’s causing me a problem as the wider wheel makes the tyre taller.
Ah good point. It was the previous generation Mavic Open Pro rim, so pretty narrow. Don't have the bike anymore so can't take measurements for you I'm afraid.
@aniki started
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I ran shimano r650 brakes with 28c GP4000 II tyres. Clearance was good.