the bottom tip, front edge of the rear mudguard , usually attaches to the Chainstay bridge, by the BB ,
that takes care of the spray coming off the rear wheel quite nicely.
If you have Horizontal front opening rear dropouts , you need space to get the wheel out
though you could let the air out each time ..
if you only take the wheel out to fix a flat with a tight fender line
requires you to wait till the wheel is back in before inflating it again , then.
Vertical dropouts are different. in that regard ..
Last edited by fietsbob; 03-30-14 at 11:41 AM.