I goofed on the load limit of the OP's tires. I didn't specify a "26" tire in my search so Schwalbe have 3 widths in a 26".
1.75 is 100kg,
2.0 is 105kg, 2.15 is 115kg That's a big difference.
Marathon Winter Plus | 55-559 | SmartGuard | Winter | Black-Reflex | 11159241 (schwalbe.com)