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[Andy B]

hmm yeah, now I think about it, Indentations are pretty useful for removing the tire (used to work in service station and did tire changes alot).. but we also did some tires off rims without much of an indentation (drag guys who had manufactured own rims)... I just couldnt understand how you could take tire off with that band fitted still.. but looked at pictures again and think I got it cleared in my head...

Just a thought though,, on this advertisement http://www.tyron.com/tyron-MultiBands.pdf  that first picture looks to me to be a side wall blow out, which even with a band means the tire would be destroyed and off the rim...

You don't ... the tyre is fitted as normal, then the whole of one side is pushed across to the other, then the band is fitted. Tyre then repositioned and inflated.

To remove the tyre you compress, then remove the band, then remove the tyre . ..... 

C'mon then Nige! What are your thoughts?  :-/ Well marketed hype or do they think they actually do something, other than psychologically?

I'm not convinced  ...... but you might have already guessed that!   

[rob in gib]

In my time working for a major tyre company i must have fitted hundreds of TYRON bands mainly to caravans and campers
also attended a training course with Tyron
and yes you fit the tyre as normal then fit the bands to the rims to effectively remove the well thus limiting the chance of the tyre coming off the rim in the event of depressurization

and can i point out that 80% of tyre blowouts are in fact caused by slow punctures in the first place hth

[Andy B]

......
and can i point out that 80% of tyre blowouts are in fact caused by slow punctures in the first place hth

Exactly! Which is why some king of tyre pressure monitor would be a better idea than the Tyron band to give fore warning! 

[Andy B]

.....
 effectively remove the well thus limiting the chance of the tyre coming off the rim in the event of depressurization
 ......

So .... am I right in saying that, bands were originally fitted to help prevent tyre beads from coming off the rims before rims were routinely fitted with safety ledges/humps to hold the bead in place?

[rob in gib]

.....
 effectively remove the well thus limiting the chance of the tyre coming off the rim in the event of depressurization
 ......

So .... am I right in saying that, bands were originally fitted to help prevent tyre beads from coming off the rims before rims were routinely fitted with safety ledges/humps to hold the bead in place?

you are partially correct Andy but most standard rims do not have a safety hump and believe me the difference with the bands fitted can be live saving

my personal choice given today's technology would be run flat tyres with a pressure monitoring system  

[Andy B]

....
 but most standard rims do not have a safety hump and  .....

They don't?  :-?
I thought they did  :-/ You mean ally or steel or just in general? If there was no safety hump on my car's rims, why do you have to blow a tyre up to silly psi to get it to seat properly?
I'm having a look at my caravan's rim tomorrow .... if it's warmer than today has been!     

[Andy B]

[ .... with a pressure monitoring system  

and am I right in saying that we'll soon be following USA's lead and making them a legal requirement on new cars in a couple of years?  :-/ 

[rob in gib]

i mean all rims in general

in the last ten years they have been using a secondary bead this does help but is mainly there to aid the seating and therefore sealing on the bead

the only wheels i can remember having a safety hump was the TD double bead system fitted to metro montego and jaguar cars

[Andy B]

i mean all rims in general

 .......

So how does the tyre stay put when you're giving it some around a corner? Why isn't it moved side ways off its seat?

[sexydaz]

i mean all rims in general

in the last ten years they have been using a secondary bead this does help but is mainly there to aid the seating and therefore sealing on the bead

the only wheels i can remember having a safety hump was the TD double bead system fitted to metro montego and jaguar cars

i remember them..the tyres were worth more than the car bloody expensive and only one manufacturer iirc back in the day when i was doin that job...dunlop i think

[Vamps]

i mean all rims in general

in the last ten years they have been using a secondary bead this does help but is mainly there to aid the seating and therefore sealing on the bead

the only wheels i can remember having a safety hump was the TD double bead system fitted to metro montego and jaguar cars

i remember them..the tyres were worth more than the car bloody expensive and only one manufacturer iirc back in the day when i was doin that job...dunlop i think

Correct....
And those tyre inserts have been around for years and years, so nothing new..