Smart Forfour tire and wheel sizes
The Smart Forfour was approved in Switzerland between 2004 and 2018 with tires from 175/65R14 to 185/45R17 on 14″, 15″, 16″, 17″ wheels. The most common sizes are 205/45R16, 165/65R15, 185/60R15. 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
Smart forfour (2014–2018) type 451
10 approved versions, e.g. forfour, forfour ed, forfour Brabus.
Smart forfour (2004–2006) type 454
10 approved versions, e.g. forfour cdi 50kW, forfour cdi 70kW, forfour 1.1 55kW, forfour 1.3 70kW.
| Tire size | Axle | Load / speed | Rim and offset | Versions |
|---|---|---|---|---|
| 175/65R14 | Front & rear | 82T | 5.5Jx14 ET46 | 9 |
| 195/50R15 | Front & rear | 82H | 6Jx15 ET46 | 9 |
| 185/55R15 | Front | 82H | 6Jx15 ET46 | 1 |
| 205/50R15 | Rear | 86H | 6Jx15 ET46 | 1 |
| 205/45R16 | Front & rear | 82H | 6.5Jx16 ET46 | 10 |
| 205/40R17 | Front | 82V | 7Jx17 ET48 | 1 |
| 225/35R17 | Rear | 82V | 8Jx17 ET48 | 1 |
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 20 of 20 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.