Originally Posted by
WhyFi
If you know how to patch a tube, I'd wager the failure rate is on par with an out-of-the-box tube.
Nope. I've been riding for more than 30 years. I've never had a bad tube out-of-the box but I've had a few slow leaks from patchs and I know how to do it. One time road debris caused multiple weak points in a tube - what I patched took care of one hole but that wasn't enough. For $3, it's not worth it.