235/40R19 tire size
A 235/40R19 tire is 26.4 inches tall and 9.3 inches wide. Here are its full dimensions, what the numbers mean, and the sizes you can swap it for.
- Overall diameter
- 26.40″ (671 mm)
- Section width
- 9.25″ (235 mm)
- Sidewall height
- 3.70″ (94 mm)
- Wheel diameter
- 19″
- Circumference
- 82.9″
- Revolutions per mile
- 764
What 235/40R19 means
- 235: the tire is 235 mm (9.3 in) wide from sidewall to sidewall.
- 40: the sidewall is 40% of the width, 94.0 mm (3.70 in) tall.
- R: radial construction, used by almost every modern tire.
- 19: it fits a 19-inch wheel.
Overall diameter = 19 + 2 × 3.70 = 26.40 inches.
Sizes equivalent to 235/40R19
These sizes are within 3% of the overall diameter, the usual limit for swapping without speedometer problems.
| Size | Diameter | Difference | Speedometer at 60 mph |
|---|---|---|---|
| 235/35R20 | 26.5″ | +0.3% | 60.2 mph actual |
| 225/30R21 | 26.3″ | -0.3% | 59.8 mph actual |
| 235/30R21 | 26.6″ | +0.6% | 60.3 mph actual |
| 225/35R20 | 26.2″ | -0.8% | 59.5 mph actual |
| 215/45R19 | 26.6″ | +0.8% | 60.5 mph actual |
| 225/40R19 | 26.1″ | -1.2% | 59.3 mph actual |
| 245/40R19 | 26.7″ | +1.2% | 60.7 mph actual |
| 215/30R21 | 26.1″ | -1.2% | 59.3 mph actual |
| 245/35R20 | 26.8″ | +1.3% | 60.8 mph actual |
| 215/40R20 | 26.8″ | +1.4% | 60.8 mph actual |
Going a size taller? 275/35R19 is 26.6″ tall, 0.7% more than 235/40R19. Compare any two sizes in the tire size calculator.
See every common size side by side in the tire size chart.
Questions
What is 235/40R19 in inches?
A 235/40R19 tire is about 26.4 inches tall (671 mm) and 9.3 inches wide, on a 19-inch wheel. In flotation sizing that's roughly 26.4x9.3R19.
How tall is a 235/40R19 tire?
The overall diameter is 26.40 inches: the 19-inch wheel plus two 3.70-inch sidewalls. Actual tires vary by a few tenths of an inch between brands and models.
Can I put 245/40R19 instead of 235/40R19?
245/40R19 is 0.31 inches taller (1.2%) and 10 mm wider. That's within the usual 3% limit, but check that your wheel width is approved for it and that it clears the suspension.
How many revolutions per mile does a 235/40R19 make?
About 764 revolutions per mile, from a circumference of 82.9 inches.
