depends on your viewpoint, some people say store them so they can air so the additive can evaporate & any moisture from the additive can evaporate, others say store them in a sealed bag but put some additive on them & let the sauce soak in, however this can also rot the glue used to secure the tyre to the rims.
Personally i let the tyres air or store them in a box such as a shelf on a pit box so when the box is opened they dry in the air. I've found it depends on what tyres you are running & how much meat they have on them & how long you are going to store them. if you are an occasional racer & only race 12th once in a blue moon, perhaps sealing them up but cleaning them up 1st is the way for you, but if you race often & quite regular, taking the tyres with you, store them in a box or a pencil case.
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