Originally Posted by
bg7.3fx
What are the widest tires you have installed on your Trek FX3 or 7.3fx hybrid bike?
I have 40mm wide WTB Nanos on my '18 FX3. There is a little tab centered on the rear tire. Think it is for fenders. Just filed a little extra clearance to allow easier wheel removal. Rides much better and doesn't dig in loose sand the way the 32s did.