205/75R15 vs 225/75R15
225/75R15 is 1.18 inches taller than 205/75R15 and 20 mm (0.8 in) wider.
+4.4% height. Outside the usual 3% rule: the speedometer and ride height change noticeably.
| Measurement | 205/75R15 | 225/75R15 | Difference |
|---|---|---|---|
| Overall height | 27.1 in | 28.3 in | +1.18 in (+4.4%) |
| Section width | 8.1 in | 8.9 in | +0.79 in (+20 mm) |
| Sidewall height | 6.1 in | 6.6 in | +0.59 in |
| Circumference | 85.2 in | 88.9 in | +3.7 in |
| Revolutions per mile | 744 | 713 | −31 |
| Ride height | +0.59 in |
Speedometer
With 225/75R15 fitted, a speedometer set up for 205/75R15 shows the first number when you are really doing the second.
- 3031.3 mph
- 4547.0 mph
- 6062.6 mph
- 7578.3 mph
The two sizes
205/75R15 is 27.1 inches tall with a 6.1-inch sidewall. 225/75R15 is 28.3 inches tall with a 6.6-inch sidewall. A taller sidewall rides softer and gives more ground clearance; a shorter one turns in more sharply. Try other pairs in the tire size calculator.
More comparisons
Questions
Which is bigger, 205/75R15 or 225/75R15?
225/75R15 is taller: 28.3 inches against 27.1. 225/75R15 is wider, at 225 mm.
Can I replace 205/75R15 with 225/75R15?
It is 4.4% taller, outside the usual 3% rule, so expect a noticeable speedometer change and check for rubbing at full lock and full suspension travel.
How much does the speedometer change?
With 225/75R15 on a vehicle set up for 205/75R15, the speedometer shows 60 mph at a true 62.6 mph, and 70 at 73.1.