315/70R17 vs 295/65R19
295/65R19 is shorter than 315/70R17 by 0.77% — a diameter difference of 0.26″.
What changes between 315/70R17 and 295/65R19
Switching from 315/70R17 to 295/65R19 changes overall diameter by -0.77%, a shorter tire by 0.26 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 -0.79″ (315mm → 295mm), which affects contact patch and fender-well clearance. Sidewall height shifts by -1.13″: a shorter sidewall sharpens steering response at the cost of ride comfort and rim protection. Revs per mile moves by +4, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 64.5 mph. The swap also changes rim diameter from 17″ to 19″, meaning new wheels are required. Wheel cost typically dominates the total upsize budget.
| Spec | 315/70R17 | 295/65R19 |
|---|---|---|
| Overall diameter | 34.36″ | 34.1″ |
| Section width | 12.4″ (315 mm) | 11.61″ (295 mm) |
| Sidewall height | 8.68″ (70%) | 7.55″ (65%) |
| Rim diameter | 17″ | 19″ |
| Circumference | 107.95″ | 107.12″ |
| Revs per mile | 587 | 591 |
Interactive comparison
275/65R18 or "33" for inch aliases315/70R17
- Diameter
- 34.36″ / 872.8mm
- Section Width
- 12.4″
- Sidewall
- 8.68″ / 220.5mm
- Circumference
- 107.95″
- Revs/Mile
- 587
295/65R19
- Diameter
- 34.1″ / 866.1mm
- Section Width
- 11.61″
- Sidewall
- 7.55″ / 191.75mm
- Circumference
- 107.12″
- Revs/Mile
- 591
Speedometer & Diameter Impact
Different rim — new wheels requiredAt an indicated 60 mph, your actual speed is 59.54 mph (95.82 km/h). Your speedometer reads 0.77% high versus actual speed.