One of the stumbling blocks for many people is what size of valves they need when they want to buy deep section carbon fiber wheels . We felt that we could save you from that problem; it will always be a problem when you least expect it.
You’ll get a puncture the day before a ride out with friends or a race that you are targeting, although that is more likely to be a mysterious puncture that appears from nowhere and deflates your tire magically during the night.
You then have a hectic morning trying to find tubes with the correct length valve or valve extenders to make tubes you already have fit. It might be even more fun if you have gone tubeless, trying to find 80mm tubeless valves is fantastic fun when you are pushed for time.
That is why we have created the below valve length to the rim depth chart. We would recommend that you always have spares of the correct size so as to save yourself from the stress as mentioned earlier. It also means if the worst does happen you can phone round bike shops or order valves on the internet knowing that they will be the ones that you need.
There is currently no standard for the length of the long valve tube, but most of them are around 50-80 mm.
Many manufacturers calculate the appropriate value length based on a large amount of test data.
Generally speaking,the longer the rim depth, the longer the valve size you need.
Rim Depth |
Valve Length Needed |
35mm |
55mm |
40mm |
55mm |
45mm |
60mm |
50mm |
60 – 70mm |
55mm |
70 – 80mm |
86mm |
110mm |
Now you know the mysteries of tire valves you should have no problems with making sure you are running the correct valves for your rim depth.
Please remember this chart is for ICAN carbon fiber wheels, other manufacturer’s measurements may differ.Now go out and ride your bike.
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