Jeff,Steve,
Since it appears that you have the Porsche Extended Warranty, as per posts elsewhere on the forums just be aware that the rear replacements should have the same N-rating as the fronts to comply with the 111-point check/Warranty T&Cs.
Jeff
Thanks. I was aware and they are all N1 rated. Not cheap at £332 per tyre so I was glad I was not paying for them!
Steve