I too have a vaya with racks and large sks fenders for 700/40 tires and had no problem mounting all of it. My brakes are avid elixir 3 and the stays go right over top of them without making contact. If the brakes were thicker I suppose I might have had to bend the stays a bit as others have mentioned. My only alteration has been to hack an inch or so off the stays so the fenders weren't too far from the tires.