275/40R22 vs 315/35R22
315/35R22 is taller than 275/40R22 by 0.06% — a diameter difference of 0.02″.
What changes between 275/40R22 and 315/35R22
Switching from 275/40R22 to 315/35R22 changes overall diameter by +0.06%, a taller tire by 0.02 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 +1.57″ (275mm → 315mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.01″: a taller sidewall softens ride quality and adds off-road bump protection, with some loss of steering crispness. Revs per mile moves by -1, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 65.0 mph. Both sizes share the same 22″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 275/40R22 | 315/35R22 |
|---|---|---|
| Overall diameter | 30.66″ | 30.68″ |
| Section width | 10.83″ (275 mm) | 12.4″ (315 mm) |
| Sidewall height | 4.33″ (40%) | 4.34″ (35%) |
| Rim diameter | 22″ | 22″ |
| Circumference | 96.33″ | 96.39″ |
| Revs per mile | 658 | 657 |
Interactive comparison
275/65R18 or "33" for inch aliases275/40R22
- Diameter
- 30.66″ / 778.8mm
- Section Width
- 10.83″
- Sidewall
- 4.33″ / 110mm
- Circumference
- 96.33″
- Revs/Mile
- 658
315/35R22
- Diameter
- 30.68″ / 779.3mm
- Section Width
- 12.4″
- Sidewall
- 4.34″ / 110.25mm
- Circumference
- 96.39″
- Revs/Mile
- 657
Speedometer & Diameter Impact
Wider tire — verify wheel widthAt an indicated 60 mph, your actual speed is 60.04 mph (96.62 km/h). Your speedometer reads 0.06% low versus actual speed.