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Fender width?

Old 04-12-11, 09:52 PM
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Accordion
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Fender width?

Got a 2011 Novara Safari touring/commuting bike. It's got Continental 40mm tires on it. I need fenders.

I saw that REI has 35mm, 40mm, 50mm, etc. What size do I need if I want to keep these stock tires? I figured at least 40mm but probably 50mm if I want a little clearance. I don't know how wide is to wide, however, and what detriments would be present from selecting too wide.

Thanks!
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Old 04-12-11, 10:11 PM
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SKS 50mm fender fits 38-45mm tire.
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Old 04-13-11, 12:49 AM
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At least 8mm larger than your tyre. I always go for 12+mm wider.
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Old 04-13-11, 05:50 AM
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Thank you both!
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Old 04-13-11, 06:44 AM
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Originally Posted by augustao View Post
At least 8mm larger than your tyre. I always go for 12+mm wider.
+1

My cross-bike came with 35mm knobbly tyres, I fitted 45mm SKS chromoplast fenders but now have 28mm road tyres for my commute.
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Old 04-13-11, 08:48 AM
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itsthewoo
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Originally Posted by giskard View Post
+1

My cross-bike came with 35mm knobbly tyres, I fitted 45mm SKS chromoplast fenders but now have 28mm road tyres for my commute.
The 35s fit nicely over 28s on my XCheck. However, I needed to use brackets and stuff I had lying around to make them look good on the bike.
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Old 04-13-11, 11:54 AM
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50's pretty wide. I'd suggest taking your bike with you when you go shopping to make sure they'll fit.
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Old 04-13-11, 02:54 PM
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10mm is my rule of thumb for fender clearance, but only because I'm bad at maths. You can easily go down to 7 or 8 mm larger than measured tire size and be good to go.

It's worth checking the tire manufacturers size against reality before you make the purchase
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Old 04-13-11, 03:36 PM
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gear
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Width is important but length is more critical. Oh, and don't forget to have some rubber over the end.
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Old 04-14-11, 09:08 AM
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Generally speaking, in a bike like that, just get the widest that will fit your frame. That, in turn, will limit (or not limit) the width of tire you can run.

Unless you have a frame with MTB type spacing in the fork and stays, the widest fender possible in the frame will not be a ridiculous beach cruiser sail/fairing/what-have-you. It will, however, with a snug fit be more prone to stay in place, and offer you the most options for tires, while helping to protect from "side spray".
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