Tyre repair

Any foreign body within a tyre will create an effect like a rolling snow ball ,increasing in time .unless using dyno balls old school tyre balancing.

that makes sense the water rolling snow ball effect collecting deposits 👍 cheers guys

Balancing beads?

www.innovativebalancing.com/

they were described to me as chalk/silicon used to stop the tyre sticking to the mould during production in a company owned by Pirelli I used to work for,in use they pick up any spare bits in the above described snowball effect,theyve been in most tyres ive seen in my near 40yr career(so far)

It’s just ‘debris’. Small amounts of rubber,releasing compound, dust etc.