700×30c for Cannondale BBU

Yesterday I found a couple of knobby tyres that may fit my BBU and would allow me to ride better off road with my stock set of rims. So after mounting them I can say that yes, the Schwalbe CX Pro H269 700×30 does fit the stock Sun rims and HeadShok of a Cannondale Bad Boy Ultra.

new 700x30 Schwalbes in HeadShok Fatty Ultra DLR

They leave just very little space but do not reach the HeadShok valve.

new 700x30 Schwalbes in HeadShok Fatty Ultra DLR

Silly me.

Thinking of MTB tyres and 29′ers I had completely forgotten the cyclocross category.

These Schwalbes should be a huge improvement when ridding off road. My old Conti slicks are very reliable, haven’t even got a flat in two years and handle well in rain. But when they start hitting the dirt… well let’s just say they were not meant for that.

If these 700×30 fit, there is a good chance that any of the nice 700×35 Maxxis cyclocross tyres will fit as the second number indicates a width increase, for which the Fattys have enough clearance as shown in the second picture. And a little fatter tyres will provide a better ride for the narrow rims I’ve got.

So now, do I keep these tyres or put back the Contis and return the Schwalbes in exchange for the Maxxis?


Yeah, I know, the computer sensor cable looks awful. Wireless Strada or V3 is next.


Space is tight but it’s not rubbing at all.


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