155/70R19 vs 275/35R20 tire size
275/35R20 vs 155/70R19, diameter
+0.1% taller
- Speedometer
- 59.9 mph
- At a true 60 mph
- Diameter
- 27.58 in
- Was 27.54 in
- Revs per mile
- 731
- Was 732
- 3% guideline
- Within
Car built for 155/70R19, now on 275/35R20.
155/70R19 and 275/35R20
| Measure | 155/70R19 | 275/35R20 | Difference |
|---|---|---|---|
| Width, mm | 155 | 275 | +120 |
| Sidewall, % of width | 70 | 35 | -35 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 4.27 | 3.79 | -0.48 |
| Diameter, in | 27.54 | 27.58 | +0.04 (+0.1%) |
| Circumference, in | 86.5 | 86.6 | +0.1 |
| Revs per mile | 732 | 731 | -1 (-0.1%) |
Fitting 275/35R20 instead of 155/70R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- 120 mm wider. Check rubbing at full lock.
Cars with 155/70R19
Cars with 275/35R20
What this cannot tell you
Diameter within 3% is a common shop guideline, not a maker spec.
Load index, offset and clearance are not in this data.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ