Used tyre advice

[craigjm]

OK im not about to start talking about buying part worn tyres so don't worry! I have recently had to replace one of the rear tyres on my CS due to puncture so replaced both rears as per my usual drill. However, the tyre on the other side still has 6mm of tread on it (and is the same brand and N rating as the new ones). If i keep this and store it is there any specific conditions they should be stored in? do the deteriorate after a time and if so how long? my thought was that if i end up with another rear puncture and the tyres are down to about 6mm I can reuse it. Am i insane or sensible?

[monthefish]

craigjm said:

OK im not about to start talking about buying part worn tyres so don't worry! I have recently had to replace one of the rear tyres on my CS due to puncture so replaced both rears as per my usual drill. However, the tyre on the other side still has 6mm of tread on it (and is the same brand and N rating as the new ones). If i keep this and store it is there any specific conditions they should be stored in? do the deteriorate after a time and if so how long? my thought was that if i end up with another rear puncture and the tyres are down to about 6mm I can reuse it. Am i insane or sensible?

Sounds fairly sensible to me;

Rubber certainly does perish and deteriorate after a while, timescales will vary according to:
1) How old they are already (there should be a manuafacture date code moulded into the sidewall)
2) The conditions they are stored under.

As for (2), I'm not sure what the optimum storage conditions are but I'm guessing inside a house is probably as good as you'll get (probably on its side).

[Pugley]

Sensible

If you keep it so long that the rubber starts to degrade and crack - throw it away

[blackburn]

I'd leave it in the garage, out of too much sunlight, until such time as you may need it. I've got several winter tyre/wheel combinations for our Fords and they all seem to survive ok tucked away under the workbenches in the garage.

[nxi20]

Ideally they should be stored away from daylight at around 10-15 degrees, upright in a tyre rack and rotated every couple of months to avoid deformation.

That's the ideal. Keeping them away from daylight and severe heat & cold would do though. IOW, at the back of the garage