The aging process is due (so I understand) in the main to sunlight /ultra violet. If its been in the dark of the boot (as opposed to on the vehicle) then it should not have suffered much degradation. I know that motorhomers run into this problem due to doing low mileage but leaving the tyres exposed to sunlight. The general guidance in their case is to change the tyres after 5 years notwithstanding the wear. Change of colour (greyish) and fine cracking are signs of aging (and on your tyres too). 
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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19th August 2013, 12:14 PM
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