Porsche 718 tire and wheel sizes
The Porsche 718 was approved in Switzerland between 2016 and 2021 with tires from 235/45R18 to 265/35R20 on 18″, 19″, 20″ wheels. The most common sizes are 235/35R20, 265/35R20, 235/40R19. Some versions use different sizes front and rear (staggered fitment).
Sizes differ by engine, trim and market. Confirm with the tire placard (usually on the driver's door jamb), the owner's manual or the vehicle registration papers before buying tires or wheels.
Most common sizes
Porsche 718 (2016–2021) type 982
55 approved versions, e.g. 718 Boxster GTS, 718 Boxster, 718 Cayman GTS, 718 Cayman.
How to read this table
Rim and offset uses the European notation: 7Jx17 ET45 is a 7-inch wide, 17-inch diameter wheel with a 45 mm offset. "Versions" is how many approved versions list that size — a rough guide to how common it is. Load / speed is the most frequent service description (for example 91V) among them; your car may require a higher one.
Showing 55 of 56 approvals: rare special versions are left out to keep the page readable. Records were read from the German-language text and checked against the French text; 100 % matched exactly.
Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.