Those are 75s. 45s are an entirely different beast. I have only done ~11 km on 16"/45 mm which is actually quite practical except for the poor quality of the cranks. On larger wheels I have only done a few meters.
75s for comparison
Those are 75s. 45s are an entirely different beast. I have only done ~11 km on 16"/45 mm which is actually quite practical except for the poor quality of the cranks. On larger wheels I have only done a few meters.
75s for comparison