Schumacher tyres ????

[Robocop]

This might sound weird, opened up a new set of 2wd mini spike greens to get ready for sunday,and i dont think they are feel like silver to me sticky like them too.
They just feel to sticky compared to the other greens on my car now does anyone know if there was a mixed up sets?
Thanks

[Si Coe]

Greens 'go off' once the bag is opened. They are actually softer than yellows when fresh, but go hard after exposure to air. Newly opened greens will feel very different from older ones.