- Aug 17, 2012
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Ok thank you, this is my second set on two differant vans i hasten to add... and never seen any cracking, cracking DOES occur on these tyres as they get old because on all vehicles except motorhomes or campervans that do more mileage and simply wear out before any cracking would occur. There is an advisory that suggests changing after 7 years, but not sure its compulsary, i have even heard of people keeping them for 10 years, by which time the mot man has usually called a halt as they do crack as you say. I would like to see a max of 5 years on the mot but im sure folk would complain, until maybe shown a video of one going bang. But i have not seen any sign of cracking of a young tyre due to under inflation, although of course driving one on say 20 psi would do the trick !No, I’m saying they are not meant to flex much in normal operation at the recommended pressures, therefore reducing the pressures puts more flex into the side wall than they are designed for and the rigid construction of the side wall can’t cope, resulting in cracking.