Smart Forfour Tire Sizes & Rim Dimensions by Year and Trim

The Smart Forfour offers a range of tire sizes and rim widths that vary depending on the model year and trim level. Early models typically feature smaller rim diameters, while later versions may have larger wheels to enhance handling and style.\n\nTrim levels influence the tire dimensions, with base trims usually equipped with narrower rims and standard all-season tires. Sportier trims often come with wider rims and lower-profile tires for improved performance.\n\nWhen comparing trims, focus on the rim width and diameter markings alongside the tire size codes to ensure compatibility and optimal vehicle handling. Proper tire fitment maintains safety and comfort across varying driving conditions.

Year
Make / model / trim Year Tire size Wheel
Smart Forfour 1.12006175/65R145.5" × 14"
Smart Forfour 1.32006175/65R145.5" × 14"
Smart Forfour 1.52006175/65R145.5" × 14"
Smart Forfour 1.5 BRABUS2006175/65R145.5" × 14"
Smart Forfour 1.5 CDI2006175/65R145.5" × 14"
Smart Forfour 1.12005175/65R145.5" × 14"
Smart Forfour 1.32005175/65R145.5" × 14"
Smart Forfour 1.52005175/65R145.5" × 14"
Smart Forfour 1.5 BRABUS2005175/65R145.5" × 14"
Smart Forfour 1.5 CDI2005175/65R145.5" × 14"
Smart Forfour 1.12004175/65R145.5" × 14"
Smart Forfour 1.32004175/65R145.5" × 14"
Smart Forfour 1.52004175/65R145.5" × 14"
Smart Forfour 1.5 CDI2004175/65R145.5" × 14"

For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Smart Forfour.

FAQ

What is the common tire size for the base Smart Forfour models?
Base Smart Forfour models often come with 155/65 R15 tires paired with 5.5J×15 rims.
How do tire sizes vary between trims of the Smart Forfour?
Higher trims generally feature larger rim diameters and wider tires, such as 175/55 R16 tires on 6.0J×16 rims, compared to smaller tires on base trims.
Why is rim width important when selecting tires for a Smart Forfour?
Rim width affects tire fit and performance; using the correct width ensures safe mounting, proper tire shape, and optimal handling characteristics.
Tire size calculatorShow

Compare two tire sizes — diameter, speedometer error, and clearance change.

inchmm
Size 1Size 2DiffDiff(%)
Diameter25.0"25.4"0.5"1.89%
Width7.7"8.5"0.8"10.26%
Circumference78.4"79.9"1.5"1.86%
Profile height5.0"4.2"-0.7"-15.08%
Turnover per mile80779314-1.73%
Clearance--+0.2"-
25.0"
7.7"
old tire side
25.5"
8.5"
new tire side
old tire
15"
old rim
5.0"
new tire
17"
new rim
4.2"

Speedometer Error

(First wheel OEM size)

Reading20 mph30 mph40 mph50 mph60 mph70 mph80 mph90 mph
Actual20.430.540.750.961.171.281.491.6