What's the widest tire that fits the Decathlon Triban RC 520
Recreational Cycling Road Bike Triban RC520 (Disc Brakes) - Decathlon
Review: Decathlon's Triban RC 520 Disc Road Bike | road.cc
Triban RC520 Disc review - BikeRadar
In case anyone is wondering, a Triban RC520 road bike will clear mudguards/fenders and 700x38 slicks (albeit the monumental toe overlap). Here is mine, all ready for fall/winter. : r/bicycling