32x11.50R15 Tire Size in Metric

32.0" tall, 11.5" wide on a 15" wheel

Diameter32.0"813 mm
Overall diameter32.0"813 mm
Section width11.5"292 mm
Sidewall height8.5"216 mm
Circumference100.5"2553 mm
Revolutions per mile630392 per km
Wheel diameter15"flotation size

A 32x11.50R15 tire is 32.0 inches tall and 11.5 inches wide and mounts on a 15-inch wheel, which leaves a 8.5-inch sidewall. It turns about 630 times per mile.

Metric sizes within half an inch of its height are 255/85R15 (32.1"), 285/75R15 (31.8"), 305/70R15 (31.8"), 315/70R15 (32.4"), 295/75R15 (32.4"), 305/50R20 (32.0"), 255/60R20 (32.0"), 255/70R18 (32.1"). 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 285/75R15, which is 0.2" shorter (−0.5%). At an indicated 60 mph you would be doing 59.7 mph on it.

32x11.50R15
285/75R15
Diameter difference−0.53%diameter 32.00" → 31.83"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 32x11.50R15

Same 15" wheel, within 20 mm of width and 10 points of aspect ratio.

SizeDiameterWidthSidewallvs 32x11.50R15
285/75R1531.8"11.2"8.4"−0.5%
305/70R1531.8"12.0"8.4"−0.6%
295/75R1532.4"11.6"8.7"+1.3%
295/70R1531.3"11.6"8.1"−2.3%
275/75R1531.2"10.8"8.1"−2.4%
285/70R1530.7"11.2"7.9"−4.0%
275/70R1530.2"10.8"7.6"−5.8%
295/65R1530.1"11.6"7.5"−5.9%

Same height on a different wheel

Sizes within 2% of 32.0" on 17" or 16" wheels.

SizeDiameterWidthSidewallvs 32x11.50R15
255/75R1732.1"10.0"7.5"+0.2%
255/80R1632.1"10.0"8.0"+0.2%
295/65R1732.1"11.6"7.5"+0.3%
315/60R1731.9"12.4"7.4"−0.4%
275/70R1732.2"10.8"7.6"+0.5%
235/80R1731.8"9.3"7.4"−0.6%

Metric equivalents of 32x11.50R15

SizeDiameterWidthSidewallvs 32x11.50R15
255/85R1532.1"10.0"8.5"+0.2%
285/75R1531.8"11.2"8.4"−0.5%
305/70R1531.8"12.0"8.4"−0.6%
315/70R1532.4"12.4"8.7"+1.1%
295/75R1532.4"11.6"8.7"+1.3%
305/50R2032.0"12.0"6.0"+0.0%
255/60R2032.0"10.0"6.0"+0.1%
255/70R1832.1"10.0"7.0"+0.2%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 32x11.50R15.

Speedometer showson 285/75R15on 305/70R15on 295/75R15
30 mph29.8 mph29.8 mph30.4 mph
45 mph44.8 mph44.7 mph45.6 mph
60 mph59.7 mph59.6 mph60.8 mph
70 mph69.6 mph69.6 mph70.9 mph

32x11.50R15 FAQ

How tall is a 32x11.50R15 tire?

32.0 inches (813 mm), with a 8.5-inch sidewall on a 15-inch wheel.

What is 32x11.50R15 in metric?

Metric sizes of about the same height are 255/85R15 (32.1"), 285/75R15 (31.8"), 305/70R15 (31.8"), 315/70R15 (32.4").

How many revolutions per mile does a 32x11.50R15 make?

About 630, or 392 per kilometer.