If by temperature you mean my reference to sunlight, it's the UV radiation that degrades the rubber, not the heat.johnd wrote: ↑Tue May 15, 2018 8:33 amYes, that what I thought. I'll see if I can get a picture. Did wonder whether it might conceivably be pothole damage of which we have more than our fair share around here, eg if the sharp edge of a large pothole caught the main part of the tread maybe just of-centre at reasonable speed.Nuclear Nick wrote: ↑Tue May 15, 2018 7:46 am It's strange to see cracking within the tread blocks rather than the sidewalls.
Temperature really shouldn't be an issue - these are Scorpion Verde AS tyres!
The rather general cracking in the pics would suggest a tyre defect I think and I'd certainly be going after the manufacturer for replacement, especially if it was affecting a relatively young tyre.
I'd have thought that pothole damage would be more localised.