I bought a Triban 300 from Decathlon and I want to change the stock tires (Hutchinson Equinox 2 700x23c). I want to buy some 28c tires, but I don't know if they will fit or not. I am thinking at Schwalbe Marathon or Schwalbe Durano Double Defense 700x28c. A local bicycle mechanic told me that it is ok and 28c will fit into this frame and brake calipers. But I heard that tires width differs at some brands and I am afraid to order a set of tires and after that to can't get them mounted. Can anyone give me an advice, please?