Originally Posted by
brianmcg123
The general rule is 10mm wider than the tire you want to use. That being said I have 45mm fenders and run Schwalbe Little Big Bens that measure 38mm wide. They are a tight fit, but there is no rubbing and there have not been any issues.
If I was going to go to 40mm tires I'd go to the 50mm fenders.
Thank you. I figured there was some kind of general rule about this but I could not find anything on it.
Found a lot of stuff where people seemed like they were TRYING to sound like they know what they were talking about. But nothing felt credible.
I don't ride through active volcanoes. I kick up a little road grit here and there but nothing crazy. I just want to stop flinging dirt and grime at my rear derailleur and taillight and have it look halfway decent.
The black mounting arms and the clean lines on these seem to accomplish that. And $30 is a price I can be THRILLED with even if they aren't perfect.