225/75R15 vs 235/75R15
235/75R15 is 0.59 inches taller than 225/75R15 and 10 mm (0.4 in) wider.
+2.1% height. Inside the usual 3% rule for a swap.
| Measurement | 225/75R15 | 235/75R15 | Difference |
|---|---|---|---|
| Overall height | 28.3 in | 28.9 in | +0.59 in (+2.1%) |
| Section width | 8.9 in | 9.3 in | +0.39 in (+10 mm) |
| Sidewall height | 6.6 in | 6.9 in | +0.30 in |
| Circumference | 88.9 in | 90.7 in | +1.9 in |
| Revolutions per mile | 713 | 698 | −15 |
| Ride height | +0.30 in |
Speedometer
With 235/75R15 fitted, a speedometer set up for 225/75R15 shows the first number when you are really doing the second.
- 3030.6 mph
- 4545.9 mph
- 6061.3 mph
- 7576.6 mph
The two sizes
225/75R15 is 28.3 inches tall with a 6.6-inch sidewall. 235/75R15 is 28.9 inches tall with a 6.9-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, 225/75R15 or 235/75R15?
235/75R15 is taller: 28.9 inches against 28.3. 235/75R15 is wider, at 235 mm.
Can I replace 225/75R15 with 235/75R15?
On height, yes: the difference is 2.1%, inside the usual 3% rule. Check that the extra width clears the suspension and suits your rim width.
How much does the speedometer change?
With 235/75R15 on a vehicle set up for 225/75R15, the speedometer shows 60 mph at a true 61.3 mph, and 70 at 71.5.