Alfa Romeo 4C tire and wheel sizes

The Alfa Romeo 4C was approved in Switzerland between 2013 and 2016 with tires from 205/45R17 to 235/35R19 on 17″, 18″, 19″ wheels. The most common sizes are 205/45R17, 205/40R18, 235/40R18.

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

Alfa Romeo 4C (2013–2016) type 960

7 approved versions, e.g. 4C.

Tire sizeAxleLoad / speedRim and offsetVersions
205/45R17 Front & rear 88Y 7Jx17 ET33/38 7
205/40R18 Front & rear 86Y 7Jx18 ET33/38 7
235/40R18 Front & rear 95Y 8Jx18 ET44 7
235/35R19 Front & rear 91Y 8.5Jx19 ET49/51 7

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 7 of 11 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; 9 % 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.