Just a little reminder. I came back from a trip to Spain and all tyres looked good. Getting ready for a short UK trip I did my usual checks and found one tyre at 34 psi and wouldn't inflate beyond that. On first inspections all looked good, sidewalls clean, no eggs, kerb scuffing etc. Lots of tread, no nails. On closer inspection of the treads, down at the bottom the tyre was splitting all round (almost) on the outside treads. Hopefully you can see this in the photo. Tyre was dated 2015 so was at end of normal life and a new one has been fitted. FYI, this is the third tyre in seven years I have had this happen or very similar. So keep an eye on those tyres if they are getting 6 years old, I'm just thankful it didn't seperate on a motorway in UK, France or Spain.