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Objective: install a wider rear tire on my 2016 Gayman GTS. Currently the wheel is Porsche Turbo style 20" fittted with PIrelli 265 35 ZR 20. I installed 5mm Porsche spacers. What is widest tire that fits on 20" rims that I may install?

  • 2016
  • Cayman GTS
Mileage: 
21 000
Wheels and Tires
Paradise Valley, 
Arizona

 

Objective:  install a wider rear tire on my 2016 Gayman GTS.  Currently, the wheel is Porsche Turbo style 20" fitted with Pirelli 265 35 ZR 20.  I ordered and had the dealer install 5mm Porsche spacers on the rear.  What is widest tire that fits on 20" rims that I may install? I see that Pirelli offers the 295 30 ZR 20, which is fitted on the Cayman 2016 GT4.  Will this tire fit the GTS set-up?       https://tiresize.com/tires/Porsche/Cayman/2016/GTS/         indicates equal diameter is possible if increasing size to 275/30ZR20. Sounds like it works.  Can I install the 285s? the 295s?

 

 

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