155/70R19 vs 275/40R19 tire size
275/40R19 vs 155/70R19, diameter
+0.4% taller
- Speedometer
- 59.7 mph
- At a true 60 mph
- Diameter
- 27.66 in
- Was 27.54 in
- Revs per mile
- 729
- Was 732
- 3% guideline
- Within
Car built for 155/70R19, now on 275/40R19.
155/70R19 and 275/40R19
| Measure | 155/70R19 | 275/40R19 | Difference |
|---|---|---|---|
| Width, mm | 155 | 275 | +120 |
| Sidewall, % of width | 70 | 40 | -30 |
| Rim, in | 19 | 19 | 0 |
| Section height, in | 4.27 | 4.33 | +0.06 |
| Diameter, in | 27.54 | 27.66 | +0.12 (+0.4%) |
| Circumference, in | 86.5 | 86.9 | +0.4 |
| Revs per mile | 732 | 729 | -3 (-0.4%) |
Fitting 275/40R19 instead of 155/70R19
Within the usual 3% diameter guideline.
- 120 mm wider. Check rubbing at full lock.
Cars with 155/70R19
Cars with 275/40R19
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