33x12.50R20 Tire Size in Metric

33.0" tall, 12.5" wide on a 20" wheel

Diameter33.0"838 mm
Overall diameter33.0"838 mm
Section width12.5"318 mm
Sidewall height6.5"165 mm
Circumference103.7"2633 mm
Revolutions per mile611380 per km
Wheel diameter20"flotation size

A 33x12.50R20 tire is 33.0 inches tall and 12.5 inches wide and mounts on a 20-inch wheel, which leaves a 6.5-inch sidewall. It turns about 611 times per mile.

Metric sizes within half an inch of its height are 275/60R20 (33.0"), 255/65R20 (33.1"), 325/50R20 (32.8"), 305/55R20 (33.2"), 295/55R20 (32.8"), 285/60R20 (33.5"), 265/60R20 (32.5"), 285/40R24 (33.0"). Metric tires are usually a little narrower than the flotation width suggests, so compare widths before you buy.

The size most often compared with it is 295/55R20, which is 0.2" shorter (−0.7%). At an indicated 60 mph you would be doing 59.6 mph on it.

33x12.50R20
295/55R20
Diameter difference−0.68%diameter 33.00" → 32.78"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 33x12.50R20

Same 20" wheel, within 20 mm of width and 10 points of aspect ratio.

SizeDiameterWidthSidewallvs 33x12.50R20
325/50R2032.8"12.8"6.4"−0.6%
305/55R2033.2"12.0"6.6"+0.6%compare
315/50R2032.4"12.4"6.2"−1.8%
315/55R2033.6"12.4"6.8"+1.9%
305/50R2032.0"12.0"6.0"−3.0%compare
325/55R2034.1"12.8"7.0"+3.3%
305/60R2034.4"12.0"7.2"+4.3%
315/45R2031.2"12.4"5.6"−5.6%
315/60R2034.9"12.4"7.4"+5.7%
35x12.50R2035.0"12.5"7.5"+6.1%

Same height on a different wheel

Sizes within 2% of 33.0" on 18" or 22" or 19" wheels.

SizeDiameterWidthSidewallvs 33x12.50R20
33x12.50R1833.0"12.5"7.5"±0.0%
33x12.50R2233.0"12.5"5.5"±0.0%
255/70R1933.1"10.0"7.0"+0.2%
255/75R1833.1"10.0"7.5"+0.2%
295/65R1833.1"11.6"7.5"+0.3%
275/70R1833.2"10.8"7.6"+0.5%

Metric equivalents of 33x12.50R20

SizeDiameterWidthSidewallvs 33x12.50R20
275/60R2033.0"10.8"6.5"−0.0%
255/65R2033.1"10.0"6.5"+0.2%
325/50R2032.8"12.8"6.4"−0.6%
305/55R2033.2"12.0"6.6"+0.6%compare
295/55R2032.8"11.6"6.4"−0.7%compare
285/60R2033.5"11.2"6.7"+1.4%compare
265/60R2032.5"10.4"6.3"−1.5%
285/40R2433.0"11.2"4.5"−0.1%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 33x12.50R20.

Speedometer showson 295/55R20on 285/55R20on 285/60R20
30 mph29.8 mph29.4 mph30.4 mph
45 mph44.7 mph44.1 mph45.6 mph
60 mph59.6 mph58.8 mph60.8 mph
70 mph69.5 mph68.6 mph71.0 mph

33x12.50R20 comparisons

33x12.50R20 FAQ

How tall is a 33x12.50R20 tire?

33.0 inches (838 mm), with a 6.5-inch sidewall on a 20-inch wheel.

What is 33x12.50R20 in metric?

Metric sizes of about the same height are 275/60R20 (33.0"), 255/65R20 (33.1"), 325/50R20 (32.8"), 305/55R20 (33.2").

How many revolutions per mile does a 33x12.50R20 make?

About 611, or 380 per kilometer.