Fitting 2 innertubes in each tyre
This may sound like a stupid question, but has anyone ever fitted 2 innertubes into a tyre? Drilling a second valve-hole in the rim oposite the first one to balance the weight.
Why? well, the chances are if you got a puncture, your tyre would only go half flat, and if you could remove the cause of the puncture, you could inflate the other up from half to full pressure without removing the wheel.
Perhaps the innertubes would rub together and create heat.
Any thoughts?
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