Tolerance is about 20-30mm in width.What's the tolerance, cause in this case the tire is 1 cm narrower than the rim. Can you go the other way also where the tire is wider than the rim?
Found this chart, I assume it's accurate. https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chartTolerance is about 20-30mm in width.
You won't have any issues if its narrower by 1 cm