I've plugged a lot of tires over the years. I've never had one leak. I've also had a lot of tires patched and still haven't had any problems. I guess I've been lucky.

I was getting nails in my tires pretty frequently for a while there several years ago. I picked up a tire plug kit from AutoZone and now do all my plugs myself. Saves me the trip (and cash) of going to a tire shop and waiting around for them to do it. It's acutally pretty easy. And if you have any inclination to do your own maintenance, I recommend learning how to do it and just do it on your own. I keep the plug kit in the trunk so I can make a repair on the road if I have to.

The next step is to learn how to repair chips in windshields...

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