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Mounting machine for tires likely to be costly

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DEAR TOM AND RAY: I go through a lot of used tires.

To save money, I manually dismount and mount the tires myself, using only a GM lug wrench (one end has pointed tip). This inevitably damages spots on the “bead” of the tire, resulting in leaks. I want to buy the proper tool that will prevent this damage while mounting tires for, say, around $50.

Can I get by with simply buying a crowbar, or are there other, more specialized tools that I can buy for less than this price? – David

TOM: There is a tire-mounting tool that you can buy for less than 50 bucks, David. It’s called a visit to your local gas station, where you ask them to mount and balance the tires for you.

RAY: Actually, you could just upgrade to some tire irons. That’s a set of specialized, curved-end metal bars that help you pry a tire off a rim – or get it back on there.

TOM: That’ll be a little better than hacking at your tires with a lug wrench (which is designed to remove hubcaps) and a hammer. But it’s still less than ideal. You still can damage the bead with tire irons, and it’s very difficult to add the adhesive that’s supposed to go around the inside of the bead to reduce the chance of leaks.

RAY: What you really need is your own tire-mounting machine. That’s a machine that does what you’re now doing by hand, but it does it with consistent pressure so the tire bead doesn’t get damaged.

TOM: In order to mount a tire to a wheel, you have to pull the bead of the tire (the inside edge) over the lip of the wheel. Then the tire sits inside the wheel and, when inflated, pushes out against that lip to form an airtight seal.

RAY: You’re doing it the old-fashioned way, with brute force. The only problem is that sometimes you pull too hard and damage the tire bead.

TOM: I doubt you’ll be able to find a tire-mounting machine for $50. I’m guessing $500 is the minimum you’d pay, and the price is more likely to be $1,000 plus. And then there’s the issue of balancing the tires. So you need a tire-balancing machine, too. That’s at least another grand.

RAY: And by then, you might as well buy a couple of squeegees, install some gas pumps, open a filthy restroom and make a few extra bucks on the weekends.

Got a question about cars? Email Click and Clack by visiting the Car Talk website at cartalk.com.

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