For the Porsche Cayman GTS, the options available at Tyres.co.uk include the Michelin Pilot Sport 4 S and Pirelli P Zero, which fit the factory 235/35 ZR20 front and 265/35 ZR20 rear specifications of the 718 Cayman GTS 4.0. Please check the exact registration, axle position, load index, speed rating, and any Porsche specification before purchasing.
Information regarding the tyre size of a Porsche Cayman GTS is located on the tyre-pressure placard situated on the driver's side door sill, which is visible upon opening the driver's door. This placard includes wheel and tyre combinations, as well as approved cold pressure listings. Since front and rear Cayman GTS fitments differ by generation and wheel option, please confirm with the tyre sidewall and handbook.
When it comes to your Porsche Cayman GTS, you do not need to replace all four tyres at the same time. Please ensure that you match the tyre size, construction, load index, and speed rating on each axle, and ideally use the same tyre pattern on each axle. Since all Cayman GTS versions are rear-wheel drive, and as such, there are no all-wheel-drive versions that require four matching tyres, when two new tyres are fitted, UK safety guidance is to do so on the rear axle.