This page explains bead core breakage during inflation — modern radial passenger tyres only mount on safety rims, which feature a hump running along the bead seat to prevent this on a Volkswagen Golf Mk7.
| Bead core broken during tyre inflation. |
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| Modern radial tyres for passenger cars are mounted only on
safety rims. Safety rims have a hump -1-
running along the bead seat. |
| The hump prevents the tyre from being pressed out of the rim
shoulder when travelling with insufficient tyre pressure. |
| When the tyre is inflated, the bead of the tyre may not slip
completely over the outer rim hump. |
| In this case, there is a danger of the bead core becoming
overstretched if the tyre pressure is too high. The steel wires
would then rupture partially or completely. A broken bead core
cannot be detected from the outside. |
DANGER!
| Tyres with damaged bead cores are not seated safely
and securely on the rim. Such tyres are a safety risk! |
| In addition, there is a risk of the partly broken
bead core breaking apart during continued operation and
the tyre could suddenly tear open. If the bead core
breaks during inflation, the carcass will also be
destroyed. |
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Questions & answers
Damage caused when fitting — Volkswagen Golf Mk7
What tyre damage can occur during Golf Mk7 tyre fitting?
Bead damage from incorrect machine settings, rim flange scratches and pinched inner liners. Use correct jaw protectors and lubricant.
As tyre damage can have serious consequences, you and the
driver should regularly check the tyres to identify any problems
at an early stage.
D ...
