I purchased all season Continentals one year ago, last winter (205 55 R16). I find now that three of the tires are consistently loosing PSI. The tires over a week will drop from 30PSI to around 20PSI or 15 PSI. I have checked the tires and there are no nails or holes in them. Has anyone ever heard of having to have tires taken off the rims and resealed after only having them for one year? Its quite unusual.
Anyone have any information they can offer me, would be much appreciative.
Thanks
Lewis