145/80R19 tire size
145/80R19 is a metric size: 28.1" tall, 5.7" wide, on a 19" rim — about a 28x5.50R19. The sidewall is 4.6" and the tire turns 717 times per mile.
145/80R19 specs
| Overall diameter (height) | 28.13" · 715 mm |
|---|---|
| Section width | 5.71" · 145 mm |
| Sidewall height | 4.57" · 116 mm (80% of width) |
| Rim diameter | 19" |
| Circumference | 88.39" · 2.245 m |
| Revolutions per mile | 717 (445 per km) |
| Inch (flotation) equivalent | 28x5.50R19 |
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" | +3.71% | +90 mm | 62.2 mph | calculate → |
| 245/45R19 common | 27.68" | -1.61% | +100 mm | 59.0 mph | calculate → |
| 255/50R19 common | 29.04" | +3.22% | +110 mm | 61.9 mph | calculate → |
| 255/40R19 common | 27.03" | -3.92% | +110 mm | 57.6 mph | calculate → |
| 255/45R19 common | 28.04" | -0.35% | +110 mm | 59.8 mph | calculate → |
| 225/55R19 common | 28.74" | +2.17% | +80 mm | 61.3 mph | calculate → |
| 275/40R19 common | 27.66" | -1.68% | +130 mm | 59.0 mph | calculate → |
| 225/45R19 common | 26.97" | -4.13% | +80 mm | 57.5 mph | calculate → |
| 235/50R19 common | 28.25" | +0.42% | +90 mm | 60.3 mph | calculate → |
| 285/35R19 common | 26.85" | -4.55% | +140 mm | 57.3 mph | calculate → |
| 235/45R19 common | 27.33" | -2.87% | +90 mm | 58.3 mph | calculate → |
| 265/50R19 common | 29.43" | +4.62% | +120 mm | 62.8 mph | calculate → |
| 245/50R19 common | 28.65" | +1.82% | +100 mm | 61.1 mph | calculate → |
| 285/40R19 | 27.98" | -0.56% | +140 mm | 59.7 mph | calculate → |
| 265/40R19 | 27.35" | -2.80% | +120 mm | 58.3 mph | calculate → |
| 275/45R19 | 28.74" | +2.17% | +130 mm | 61.3 mph | calculate → |
| 295/35R19 | 27.13" | -3.57% | +150 mm | 57.9 mph | calculate → |
| 285/45R19 | 29.10" | +3.43% | +140 mm | 62.1 mph | calculate → |
| 345/30R19 | 27.15" | -3.50% | +200 mm | 57.9 mph | calculate → |
| 295/40R19 | 28.29" | +0.56% | +150 mm | 60.3 mph | calculate → |
| 265/45R19 | 28.39" | +0.91% | +120 mm | 60.5 mph | calculate → |
| 305/35R19 | 27.41" | -2.59% | +160 mm | 58.4 mph | calculate → |
| 155/70R19 | 27.54" | -2.10% | +10 mm | 58.7 mph | calculate → |
| 355/30R19 | 27.39" | -2.66% | +210 mm | 58.4 mph | calculate → |
| 295/45R19 | 29.45" | +4.69% | +150 mm | 62.8 mph | calculate → |
| 345/35R19 | 28.51" | +1.33% | +200 mm | 60.8 mph | calculate → |
| 215/50R19 | 27.46" | -2.38% | +70 mm | 58.6 mph | calculate → |
| 175/60R19 | 27.27" | -3.08% | +30 mm | 58.2 mph | calculate → |
| 315/35R19 | 27.68" | -1.61% | +170 mm | 59.0 mph | calculate → |
| 155/80R19 | 28.76" | +2.24% | +10 mm | 61.3 mph | calculate → |
| 315/40R19 | 28.92" | +2.80% | +170 mm | 61.7 mph | calculate → |
| 335/30R19 | 26.91" | -4.34% | +190 mm | 57.4 mph | calculate → |
| 225/50R19 | 27.86" | -0.98% | +80 mm | 59.4 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 | |
|---|---|---|---|---|---|
| 235/55R18 common | 28.18" | +0.15% | +90 mm | 60.1 mph | calculate → |
| 255/40R20 common | 28.03" | -0.36% | +110 mm | 59.8 mph | calculate → |
| 285/35R20 common | 27.85" | -0.99% | +140 mm | 59.4 mph | calculate → |
| 295/35R20 | 28.13" | -0.01% | +150 mm | 60.0 mph | calculate → |
| 305/35R20 | 28.41" | +0.97% | +160 mm | 60.6 mph | calculate → |
| 235/45R20 | 28.33" | +0.69% | +90 mm | 60.4 mph | calculate → |
| 265/40R20 | 28.35" | +0.76% | +120 mm | 60.5 mph | calculate → |
| 335/30R20 | 27.91" | -0.78% | +190 mm | 59.5 mph | calculate → |
| 345/30R20 | 28.15" | +0.06% | +200 mm | 60.0 mph | calculate → |
| 255/50R18 | 28.04" | -0.34% | +110 mm | 59.8 mph | calculate → |
| 315/40R18 | 27.92" | -0.76% | +170 mm | 59.5 mph | calculate → |
| 215/60R18 | 28.16" | +0.08% | +70 mm | 60.1 mph | calculate → |
| 155/85R18 | 28.37" | +0.85% | +10 mm | 60.5 mph | calculate → |
| 285/45R18 | 28.10" | -0.13% | +140 mm | 59.9 mph | calculate → |
| 28x12.00R18 | 28.00" | -0.48% | +160 mm | 59.7 mph | calculate → |
| 28x10.00R18 | 28.00" | -0.48% | +109 mm | 59.7 mph | calculate → |
| 225/45R20 | 27.97" | -0.57% | +80 mm | 59.7 mph | calculate → |
| 155/65R20 | 27.93" | -0.71% | +10 mm | 59.6 mph | calculate → |
Try another size against 145/80R19
Questions
What size is 145/80R19 in inches?
145/80R19 is about 28.1" tall and 5.7" wide on a 19-inch rim — roughly a 28x5.50R19 in inch sizing.
What does 145/80R19 mean?
145 mm section width, sidewall 80% of the width (4.57"), radial construction, 19-inch rim.
What tire sizes are equivalent to 145/80R19?
On the same 19" rim, within 3% of the diameter: 255/45R19 (-0.35%), 235/50R19 (+0.42%), 285/40R19 (-0.56%), 295/40R19 (+0.56%), 265/45R19 (+0.91%), 225/50R19 (-0.98%).
How many revolutions per mile does a 145/80R19 tire make?
About 717 revolutions per mile (circumference 88.4").
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.