275/70R18 vs 295/70R18
295/70R18 is 1.10 inches taller than 275/70R18 and 20 mm (0.8 in) wider.
+3.3% height. Outside the usual 3% rule: the speedometer and ride height change noticeably.
| Measurement | 275/70R18 | 295/70R18 | Difference |
|---|---|---|---|
| Overall height | 33.2 in | 34.3 in | +1.10 in (+3.3%) |
| Section width | 10.8 in | 11.6 in | +0.79 in (+20 mm) |
| Sidewall height | 7.6 in | 8.1 in | +0.55 in |
| Circumference | 104.2 in | 107.6 in | +3.5 in |
| Revolutions per mile | 608 | 589 | −20 |
| Ride height | +0.55 in |
Speedometer
With 295/70R18 fitted, a speedometer set up for 275/70R18 shows the first number when you are really doing the second.
- 3031.0 mph
- 4546.5 mph
- 6062.0 mph
- 7577.5 mph
The two sizes
275/70R18 is 33.2 inches tall with a 7.6-inch sidewall. 295/70R18 is 34.3 inches tall with a 8.1-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, 275/70R18 or 295/70R18?
295/70R18 is taller: 34.3 inches against 33.2. 295/70R18 is wider, at 295 mm.
Can I replace 275/70R18 with 295/70R18?
It is 3.3% 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 295/70R18 on a vehicle set up for 275/70R18, the speedometer shows 60 mph at a true 62.0 mph, and 70 at 72.3.