Tyre balance beads

Author
Discussion

Cootuk3

Original Poster:

30 posts

31 months

Tuesday 29th November 2022
quotequote all
I've just watched a YouTube video where, instead of using external weights to balance a tyre, a quantity of small glass beads are inserted. These then centrifugally distribute to balance the tyre.
Anyone actually used these?
Would they beadblast tpms sensors?

spitfire-ian

3,971 posts

242 months

Tuesday 29th November 2022
quotequote all
Surely when the tyre stops rotating the beads all fall to the bottom and when you start up again the beads give you a massively out of balance wheel as they're all now in the wrong place?

Evercross

6,590 posts

78 months

Tuesday 29th November 2022
quotequote all
A quick Google found a couple of articles that state that they only work to reduce/remove vertical imbalances in the wheel/tyre and won't counteract any lateral imbalances.

Plus, as already mentioned, TPMS sensors are going to be trashed by them. There are usually good reasons why 'revolutionary' solutions are not mainstream.

ARHarh

4,701 posts

121 months

Tuesday 29th November 2022
quotequote all
Surely just basic physics says that is not going to work. Centrifugal force in a tyre at 60 mph will not allow those beads to move to the part of the tyre that need more weight, let alone stay there when stationary. Snake oil at its finest. Next they will be telling you to fill your tyres with 78% nitrogen will give you a less pressure variation with temperature smile

LivLL

11,553 posts

211 months

Tuesday 29th November 2022
quotequote all
Cootuk3 said:
I've just watched a YouTube video where, instead of using external weights to balance a tyre, a quantity of small glass beads are inserted. These then centrifugally distribute to balance the tyre.
Anyone actually used these?
Would they beadblast tpms sensors?
Was that the powerful Uk channel where he just chucked them in bag and all?

Tots garbage idea and I think he knew it was.

budgie smuggler

5,705 posts

173 months

Tuesday 29th November 2022
quotequote all
ARHarh said:
Surely just basic physics says that is not going to work. Centrifugal force in a tyre at 60 mph will not allow those beads to move to the part of the tyre that need more weight, let alone stay there when stationary. Snake oil at its finest. Next they will be telling you to fill your tyres with 78% nitrogen will give you a less pressure variation with temperature smile
No, the principle is sound, look up Dynabeads.



edit- here you go
https://www.dynabeads.co.uk/dynabeads_how.php

ARHarh

4,701 posts

121 months

Tuesday 29th November 2022
quotequote all
budgie smuggler said:
ARHarh said:
Surely just basic physics says that is not going to work. Centrifugal force in a tyre at 60 mph will not allow those beads to move to the part of the tyre that need more weight, let alone stay there when stationary. Snake oil at its finest. Next they will be telling you to fill your tyres with 78% nitrogen will give you a less pressure variation with temperature smile
No, the principle is sound, look up Dynabeads.
Yep Dynabeads look like they are the perfect solution to unbalanced tyres. I stand by my comment.

normalbloke

8,064 posts

233 months

Tuesday 29th November 2022
quotequote all
I’ve used them in my Unimog to good effect. Not sure I’d used them in anything smaller.

sxmwht

2,101 posts

73 months

Tuesday 29th November 2022
quotequote all
Right... what the fk is the point?

Draxindustries1

1,657 posts

37 months

Tuesday 29th November 2022
quotequote all
sxmwht said:
Right... what the fk is the point?
Likely an alternative to having bang on or stick on weights on your wheels.

LandieMark

1,861 posts

162 months

Tuesday 29th November 2022
quotequote all
They work well on big knobbly tyres that are hard to balance using weights. If the tyres wear unevenly then it throws tha balance off which doesn't happen with beads.

MattBee

12 posts

35 months

Tuesday 29th November 2022
quotequote all
I’ve used them to some success in a set of wheels for my Jimny that are fitted with remould mud tyres. These tyres are an absolute pig to balance conventionally.
The balance beads do help to reduce the vibration I suffered previously but it only really works above about 30mph as they need to be spinning pretty fast to have any effect.
I wouldn’t bother with them if it was possible to get a decent balance with conventional weights and once I get the tyres replaced with decent quality ones I won’t bother either.

budgie smuggler

5,705 posts

173 months

Tuesday 29th November 2022
quotequote all
ARHarh said:
Yep Dynabeads look like they are the perfect solution to unbalanced tyres. I stand by my comment.
Lol you stand by your comment where you said "Surely just basic physics says that is not going to work" confused

I linked the exact page with an explanation of how it works

Cold

15,956 posts

104 months

Tuesday 29th November 2022
quotequote all
They're more common in the States for commercial vehicles and seem to be effective.

sxmwht

2,101 posts

73 months

Tuesday 29th November 2022
quotequote all
Draxindustries1 said:
Likely an alternative to having bang on or stick on weights on your wheels.
But whom has that ever inconvenienced?

GreenV8S

30,800 posts

298 months

Tuesday 29th November 2022
quotequote all
I'm not convinced they are theoretically or practically effective. I certainly wouldn't rely on the OEM's advertising to tell me.

Supposing they are effective, I can't see any reason to prefer these over fixed weights on any tyre where conventional dynamic balancing is practical.

E-bmw

10,957 posts

166 months

Tuesday 29th November 2022
quotequote all
I would need to be convinced and can't be bothered.

Weights are not an issue & are in the right place (assuming the tyre-fitting-chimp does his job properly) in the right place all of the time.

Not quite sure how those above think the tyre valve would be "bead-blasted" or "trashed" by them as they will be distributed about the underside of the tread when the tyre is rotating & sat at the bottom when it isn't.

stevieturbo

17,745 posts

261 months

Tuesday 29th November 2022
quotequote all
They look like a load of bks.

ConnectionError

2,069 posts

83 months

Tuesday 29th November 2022
quotequote all
I used to use them on my defender with very large tyres, that could not be balanced traditionally

They were brilliant and my wheels were always balanced irrespective of the amount of mud stuck on.

Yes when stopped the beads drop to the bottom and when you drive off they move and balance the tyre.


GreenV8S

30,800 posts

298 months

Wednesday 30th November 2022
quotequote all
E-bmw said:
Not quite sure how those above think the tyre valve would be "bead-blasted" or "trashed" by them as they will be distributed about the underside of the tread when the tyre is rotating & sat at the bottom when it isn't.
I can see this happening during the transition from stationary with all beads sitting on the contact patch to the steady state with beeds ritating with the tyre and held in place by centrifugal forces. During the transition there must be a phase where beeds are being carried up by the movement of the tyre but aren't travelling fast enough to be carried over the top. During that transition they'll fall back and may hit the top of the rim. This would probably happen each time the vehicle starts or stops. I imagine the beads themselves would be ground down by this too so the tyre may end up with glass dust churning around inside it. I suppose that flexing a tyre that is covered with an abrasive dust might not be very good for it, either.

The whole idea just seems silly.