Fattest rear offroad tire on a Supercharger

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Hi all, what's the fattest tire you've had on a R&M SC with stock SKS fender and sufficient clearance?
Prefer Schwalbe.
I'd love to put a 65-584 Smart Sam or even better a 70-584 Eddy Current Rear on but not sure about clearance.
Have had a Super Moto-X and didn't like it in the wet, currently have a Marathon Plus MTB 57-584 and it's great but would like a bit more "sponge" for touring with gear.

 

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Anyone?

 

[Alaskan]

I have 28" x 2" Marathon Supremes on my 2018 Homage. They are by far the lowest rolling resistance and durable tires I could find. Not good off pavement at all though.

https://www.schwalbetires.com/bike_tires/road_tires/marathon_supreme

 

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I have 28" x 2" Marathon Supremes on my 2018 Homage. They are by far the lowest rolling resistance and durable tires I could find. Not good off pavement at all though.

https://www.schwalbetires.com/bike_tires/road_tires/marathon_supreme

I imagine the clearance is a bit different to the SC with stock SKS fenders.

 

[webcurl]

If anyone is interested, i managed to take a risk and pick up a Schwalbe Smart Sam 65-584 (Addix, Snake, DD, Raceguard) for A$40 (cheap here).
It goes nicely and with sufficient clearance with the SKS fenders on my 2018 SC GX, in heavy mud however i could see the fenders clogging up quite a bit.
Nice tire with noticeably less rolling resistance than the Marathon Plus MTB and better grip all-round i think.
I now know not to go larger than this without modifying the fender.

 

[smorgasbord]

Yeah, I want Smart Sams for my on/off road combo riding.