Bicycle tyres aren't measured by the diameter, you need to check the size that is written on the side wall of the old tyres before ordering.
Please feel free to message us with a photo of the old tyres if you are unsure of the size you need.
Pair of 12 ich Black bicycle tyres and tubes 12 x 2.125 (1 pair)
12 1/2 x 2 1/4 and 12x2.125 are the same size only one in a metric size and the other is imperial the important thing to note is they are both 203mm diameter
Features:
- 12 x 2.125 tyre x2
- Suitable replacement for 121/2 x 21/4, 121/2 x 1.72 x 2.125 121/2x1.75x21/4. 47 to 57 - 203
- 12" tube with schrader. x2 please see different types below.
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