235/60R18 vs 295/50R18
295/50R18 is taller than 235/60R18 by 1.76% — a diameter difference of 0.51″.
What changes between 235/60R18 and 295/50R18
Switching from 235/60R18 to 295/50R18 changes overall diameter by +1.76%, a taller tire by 0.51 inches. This lands inside the ±3% fitment safe zone, so most vehicles will accept the swap without rubbing, speedometer recalibration, or ABS/TPMS complications. Section width moves by +2.36″ (235mm → 295mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.26″: a taller sidewall softens ride quality and adds off-road bump protection, with some loss of steering crispness. Revs per mile moves by -12, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 66.1 mph. Both sizes share the same 18″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 235/60R18 | 295/50R18 |
|---|---|---|
| Overall diameter | 29.1″ | 29.61″ |
| Section width | 9.25″ (235 mm) | 11.61″ (295 mm) |
| Sidewall height | 5.55″ (60%) | 5.81″ (50%) |
| Rim diameter | 18″ | 18″ |
| Circumference | 91.43″ | 93.04″ |
| Revs per mile | 693 | 681 |
Interactive comparison
275/65R18 or "33" for inch aliases235/60R18
- Diameter
- 29.1″ / 739.2mm
- Section Width
- 9.25″
- Sidewall
- 5.55″ / 141mm
- Circumference
- 91.43″
- Revs/Mile
- 693
295/50R18
- Diameter
- 29.61″ / 752.2mm
- Section Width
- 11.61″
- Sidewall
- 5.81″ / 147.5mm
- Circumference
- 93.04″
- Revs/Mile
- 681
Speedometer & Diameter Impact
Wider tire — verify wheel widthAt an indicated 60 mph, your actual speed is 61.06 mph (98.26 km/h). Your speedometer reads 1.76% low versus actual speed.