What are Tyre Beads?

What are tyre beads? And how do they keep the tyre and wheel connected?
In this video, Jared our Chief Tyre Inflator, talks about what tyre beads are, what their purpose is and new developments coming in the world of tyre beads.
We're creating a new series of video clips called Tyre Glossary. This is to help you understand all the technical terms and abbreviation that get thrown around on the internet.
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Full Transcript
[Interviewer] Hey Jared?
Yeah.
[Interviewer] Can you tell us about tyre beads?
Yes, glad you asked that. Come this way. That was a bit close, wasn't it? So, tyre beads. To talk about this we need a rim. And some grunts, and we need a tyre. So, we have a tyre, we have a rim.
The tyre bead is the thing that connects the tyre to the rim. So, if we look at these Pirellis, you've got this bit here, this chunky bit of rubber which forms a positive connection with the rim. And there's actually a, generally a steel cable going through here as well, or some sort of reinforcement that means that under cornering pressures, everyday driving, that sort of thing, the tyre is not very likely to pop off.
So if we look at this, you can see the structure here on the rim and these parts here which is basically when the tyre is inflated it's pushing out on these ridges in the rim. So the tire's less likely to come off.
And so it's interesting in the four-wheel driving world, they're even starting to change the profile of the rims so that they're, even on lower pressures, they're less likely to come off, or you're less likely to pop a tyre off when you're cornering at low pressures. I'm actually interested to see what happens with those as we move forward. But anyway, that's what a tyre bead is.

[@carlosz7208]

Awesome dude

[@TyreReviewVideos]

Thanks mate!

[@anthonybrandmeyer401]

I put the beads in the tire for continental

[@DonutsReview]

What rim did you point at, that have it designed for tire beads? I'm new to 4 wheeling, so I have no idea there are rim designs like that.

[@TyreReviewVideos]

Hi mate, all rims are designed to take tyre beads, we just don't normally see them as they've got tyres on them 👍 There are a few different rim designs out there, which would be interesting to get into the warehouse to look at, but any wheel you buy will keep the tyre on. Some companies have some more specific rims that grip the beads in different ways, and they'll point that out when you're looking at the description for the wheel.

[@peter-5046]

I think some new Method wheels have this on them. But they are quite expensive...

[@DonutsReview]

@@peter-5046 oh cool. I'll check them out. I think you need special tires too right...

[@TyreReviewVideos]

Yes! They're the ones, I couldn't think of who it was when writing that previous comment. Trail Grip, or something? They look really interesting. I was thinking of seeing if I could get a set and comparing how they fare in contrast with a "standard" rim.

[@DonutsReview]

@@TyreReviewVideos ohhh not bad at all. Thank you guys for the info.

[@jamman7344]

What is x and what is j?

[@Declestic]

For the longest time I thought they used adhesives

[@mcoffroadinaz4075]

Nice 15F standup ski you got going there. :)