Hey Johan,
No issues with the fit of the supermotos on the chain stay. I have about a 6mm on either side. I bought the 27.5 rims off kijiji for 120 so I didn’t feel so bad about buying rims. Having said that I also fitted the 50-622 big bens on the 622 rims and they are awesome as well. I think these are the perfect tires for this bike. I will be using the super moto tires for winter but the big bens are way faster.
Thanks for the reply, I might go with the 50-622 Big Bens instead. But for winter comuting I'll probably get 57-622 Ice Spiker Pro as we have a lot of snow and ice in the northen part of Sweden. Are you happy with the Fenders?