2018 Smart fortwo — prime coupe
The 2018 Smart fortwo prime coupe shipped with 4 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
165/65R15 (Front)
| Section width | 165 mm |
|---|---|
| Aspect ratio (sidewall height) | 65% (107.3 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~23.4" |
| Revolutions per mile | ~860 |
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185/60R15 (Rear)
| Section width | 185 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (111 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~23.7" |
| Revolutions per mile | ~850 |
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185/50R16 (Front)
| Section width | 185 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (92.5 mm) |
| Rim diameter | 16" |
| Overall tire diameter | ~23.3" |
| Revolutions per mile | ~866 |
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205/45R16 (Rear)
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (92.3 mm) |
| Rim diameter | 16" |
| Overall tire diameter | ~23.3" |
| Revolutions per mile | ~867 |
Compare prices at:
What this size means for your Smart fortwo
On the 2018 Smart fortwo prime coupe, the factory 165/65R15 measures about 23.4″ in overall diameter with a 107.3 mm (4.2″) sidewall, and completes roughly 860 revolutions per mile. Its 65-series aspect ratio gives a taller, comfort-biased sidewall that favors ride quality and shrugs off rough pavement. In tire terms it is a passenger (P-metric / Euro-metric) size.
This is a staggered setup: the front axle runs 165/65R15 and the rear runs 185/60R15. The two sizes are not interchangeable, so order each for its correct axle and don't rotate front-to-rear.
Other 2018 Smart fortwo trims
- passion cabrio 165/65R15 (Front) / 185/60R15 (Rear) / 185/50R16 (Front) / 205/45R16 (Rear)
- passion coupe 165/65R15 (Front) / 185/60R15 (Rear) / 185/50R16 (Front) / 205/45R16 (Rear)
- prime cabrio 165/65R15 (Front) / 185/60R15 (Rear) / 185/50R16 (Front) / 205/45R16 (Rear)
- pure coupe 165/65R15 (Front) / 185/60R15 (Rear) / 185/50R16 (Front) / 205/45R16 (Rear)
- Sport Package 185/50R16 (Front) / 205/45R16 (Rear)
Smart fortwo tire sizes by year
- 2019 Smart fortwo 165/65R15 (Front) / 185/60R15 (Rear) / 185/50R16 (Front) / 205/45R16 (Rear)
- 2017 Smart fortwo 155/60R15 (Front) / 175/55R15 (Rear)
- 2016 Smart fortwo 155/60R15 (Front) / 175/55R15 (Rear)
- 2015 Smart fortwo 155/60R15 (Front) / 175/55R15 (Rear)
- 2014 Smart fortwo 155/60R15 (Front) / 175/55R15 (Rear)
- 2013 Smart fortwo 155/60R15 (Front) / 175/55R15 (Rear)
- 2012 Smart fortwo 175/55R15 (Front) / 215/35R17 (Rear)
- 2011 Smart fortwo 175/55R15 (Front) / 215/35R17 (Rear)
- 2010 Smart fortwo 175/55R15 (Front) / 215/35R17 (Rear)
- 2009 Smart fortwo 175/55R15 (Front) / 215/35R17 (Rear)
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.