I have today changed both my tyres after 5303 miles of puncture-free road riding because the rear tyre was showing vulnerability from skid wear.
I don't know if "graphene" makes the slightest bit of difference to puncture susceptibility or is just hype - but for the present, I'm a believer.
(and 341 miles in August so far on my beautiful Bianchi which still makes my heart sing with joy).