Originally Posted by EjustE

Schwalbe Marathon plus tires come in 25 and 28 (not 27) sizes and either one will fit your rims. To add fenders, you would likely have to replace your 600 brakes with a center-pull variety. I never found much of a use for a front fender even on long rides and having a solid rack in the back makes a rear fender somewhat repetitive. Something like this:



Does the job and it is rated for up to 40 lbs (Eleven81 City Limit Bicycle Beam Mounted Rack - Black - RACK1012)