165/90R19 tire size
165/90R19 is a metric size: 30.7" tall, 6.5" wide, on a 19" rim — about a 30.5x6.50R19. The sidewall is 5.8" and the tire turns 657 times per mile.
165/90R19 specs
| Overall diameter (height) | 30.69" · 780 mm |
|---|---|
| Section width | 6.50" · 165 mm |
| Sidewall height | 5.85" · 149 mm (90% of width) |
| Rim diameter | 19" |
| Circumference | 96.42" · 2.449 m |
| Revolutions per mile | 657 (408 per km) |
| Inch (flotation) equivalent | 30.5x6.50R19 |
Equivalent sizes on a 19" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 235/55R19 common | 29.18" | -4.94% | +70 mm | 57.0 mph | calculate → |
| 245/55R19 common | 29.61" | -3.53% | +80 mm | 57.9 mph | calculate → |
| 255/55R19 common | 30.04" | -2.12% | +90 mm | 58.7 mph | calculate → |
| 255/60R19 common | 31.05" | +1.15% | +90 mm | 60.7 mph | calculate → |
| 265/50R19 common | 29.43" | -4.10% | +100 mm | 57.5 mph | calculate → |
| 275/55R19 | 30.91" | +0.71% | +110 mm | 60.4 mph | calculate → |
| 265/55R19 | 30.48" | -0.71% | +100 mm | 59.6 mph | calculate → |
| 275/50R19 | 29.83" | -2.82% | +110 mm | 58.3 mph | calculate → |
| 255/65R19 | 32.05" | +4.43% | +90 mm | 62.7 mph | calculate → |
| 235/60R19 | 30.10" | -1.92% | +70 mm | 58.8 mph | calculate → |
| 295/45R19 | 29.45" | -4.04% | +130 mm | 57.6 mph | calculate → |
| 235/65R19 | 31.03" | +1.09% | +70 mm | 60.7 mph | calculate → |
| 175/80R19 | 30.02" | -2.18% | +10 mm | 58.7 mph | calculate → |
Plus / minus sizing: 18" and 20" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 265/60R18 common | 30.52" | -0.56% | +100 mm | 59.7 mph | calculate → |
| 265/50R20 common | 30.43" | -0.85% | +100 mm | 59.5 mph | calculate → |
| 275/50R20 common | 30.83" | +0.44% | +110 mm | 60.3 mph | calculate → |
| 295/45R20 | 30.45" | -0.78% | +130 mm | 59.5 mph | calculate → |
| 275/60R18 | 30.99" | +0.97% | +110 mm | 60.6 mph | calculate → |
| 305/45R20 | 30.81" | +0.37% | +140 mm | 60.2 mph | calculate → |
| 245/65R18 | 30.54" | -0.50% | +80 mm | 59.7 mph | calculate → |
| 235/70R18 | 30.95" | +0.85% | +70 mm | 60.5 mph | calculate → |
| 175/90R18 | 30.40" | -0.95% | +10 mm | 59.4 mph | calculate → |
Try another size against 165/90R19
Questions
What size is 165/90R19 in inches?
165/90R19 is about 30.7" tall and 6.5" wide on a 19-inch rim — roughly a 30.5x6.50R19 in inch sizing.
What does 165/90R19 mean?
165 mm section width, sidewall 90% of the width (5.85"), radial construction, 19-inch rim.
What tire sizes are equivalent to 165/90R19?
On the same 19" rim, within 3% of the diameter: 265/55R19 (-0.71%), 275/55R19 (+0.71%), 235/65R19 (+1.09%), 255/60R19 (+1.15%), 235/60R19 (-1.92%), 255/55R19 (-2.12%).
How many revolutions per mile does a 165/90R19 tire make?
About 657 revolutions per mile (circumference 96.4").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.