Rims too thin for Schwalbe Marathon Plus tyres?

andywand

Hi all - my first post on the forum. I have a Cannondale Bad Boy (2016), whose rims are Cannondale C3 Bad Boy, double wall, 32-hole, and comes with Schwalbe Kojak Race Guard, 700x28c tyres. I have purchased Schwalbe Marathon Plus Wired Tyre with Smartguard, again 700x28c. The problem is that they simply do not go on, not even a little bit! I have read other forum entries discussing the difficulty of fitting these tyres, but my problem seems a bit more fundamental, as the rim gap seems physically insufficient for both beads and the tube valve, and indeed I have been unable to fit even both beads into the rim away from the valve. So, is it possible that this just is not compatible? Thanks!

Man Of Lard

No, they're just an utter b*****d to get on (and off) - if they're easy to get on, you have rims that are below spec diameter.

Soapy water *may* help.

greenamex2

Man Of Lard wrote:

No, they're just an utter b*****d to get on (and off) - if they're easy to get on, you have rims that are below spec diameter.

Soapy water *may* help.

Can confirm that. Fitting car tyres was easier!

bikegangster

What's the internal width of the rim? 15mm?

Chris_M!

Try this:
https://www.youtube.com/watch?v=-XUFVrl0UT4