Tire Ruler205/55R16 dimensions
| Overall diameter (height) | 24.88″ · 632 mm |
| Section width | 8.07″ · 205 mm |
| Sidewall height | 4.44″ · 113 mm |
| Wheel diameter | 16″ |
| Rim width (rule of thumb) | 5.5–7″ |
| Circumference | 78.2″ |
| Revolutions per mile | 811 |
| In inches (flotation style) | 24.9 × 8.1R16 |
How it’s calculated: the sidewall is 55% of the 205 mm width = 112.8 mm (4.44″). Add two sidewalls to the 16″ wheel: 16 + 2 × 4.44 = 24.88″.
Bigger tires than 205/55R16 on 16″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 205/60R16 | 25.7″ | +0.81″ (+3.2%) | 61.9 mph |
| 215/60R16 | 26.2″ | +1.28″ (+5.1%) | 63.1 mph |
“60 mph reads” is your real speed when a speedometer set up for 205/55R16 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 195/65R15: 25.0″ tall on a 15″ wheel (+0.4%)
- 225/45R17: 25.0″ tall on a 17″ wheel (+0.4%)
- 215/45R17: 24.6″ tall on a 17″ wheel (−1.0%)
- 205/50R17: 25.1″ tall on a 17″ wheel (+0.8%)
- 225/40R18: 25.1″ tall on an 18″ wheel (+0.8%)
Popular 205/55R16 comparisons
Frequently asked questions
Is 205/55R16 a 25 inch tire?
Yes. 205/55R16 is 24.88 inches tall, so it's sold and talked about as a 25-inch tire.
What size is 205/55R16 in inches?
205/55R16 is 24.9 inches tall (overall diameter), 8.1 inches wide, with a 4.4 inch sidewall, and fits a 16 inch wheel.
What tire size is equivalent to 205/55R16?
No common size on a 16" wheel is within 1.5% of 205/55R16's diameter. Use the calculator above to compare any size.
What rim width fits 205/55R16?
As a rule of thumb, about 5.5–7 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 205/55R16 make?
About 811 revolutions per mile in theory (circumference 78.2 in). Real tires turn slightly more because they flatten under load.