235/35R19 vs 245/35R19
245/35R19 is taller than 235/35R19 by 1.08% — a diameter difference of 0.27″.
What changes between 235/35R19 and 245/35R19
Switching from 235/35R19 to 245/35R19 changes overall diameter by +1.08%, a taller tire by 0.27 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 +0.40″ (235mm → 245mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.14″: a taller sidewall softens ride quality and adds off-road bump protection, with some loss of steering crispness. Revs per mile moves by -9, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 65.7 mph. Both sizes share the same 19″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 235/35R19 | 245/35R19 |
|---|---|---|
| Overall diameter | 25.48″ | 25.75″ |
| Section width | 9.25″ (235 mm) | 9.65″ (245 mm) |
| Sidewall height | 3.24″ (35%) | 3.38″ (35%) |
| Rim diameter | 19″ | 19″ |
| Circumference | 80.04″ | 80.9″ |
| Revs per mile | 792 | 783 |
Interactive comparison
275/65R18 or "33" for inch aliases235/35R19
- Diameter
- 25.48″ / 647.1mm
- Section Width
- 9.25″
- Sidewall
- 3.24″ / 82.25mm
- Circumference
- 80.04″
- Revs/Mile
- 792
245/35R19
- Diameter
- 25.75″ / 654.1mm
- Section Width
- 9.65″
- Sidewall
- 3.38″ / 85.75mm
- Circumference
- 80.9″
- Revs/Mile
- 783
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 60.65 mph (97.61 km/h). Your speedometer reads 1.08% low versus actual speed.