I want to get fenders for my Madone 4.7, which doesn't have any of those frame holes (braze-ons?) for attaching things like fenders and racks. The fenders would be for occasional use only, so I would like something that's easy and quick to install and remove.

A friend suggested these:

http://www.rei.com/product/697808/sk...ade-fender-set

Does anyone here have them? The reviews on REI and Amazon are generally good, though some people find that they slip and rub the tire on rough roads (e.g., after hitting a pothole). Also, some folks feel you need to use zip ties to hold them in place, which defeats the easy on/off design.

Also, these fenders come in two sizes: regular (700x18/23) and XL (700x25/32). I'm thinking the XL would work okay with 700x23 tires -- does that make sense? My current tires are 700x23, but at some point I will probably switch to 700x25.

Thanks!!