37x12.50R18 tire size
A 37x12.50R18 tire is 37 inches tall and 12.5 inches wide on an 18-inch rim, with a 9.5-inch sidewall. The closest metric size is 315/75R18, 0.4 inches shorter.
- Overall height
- 37 in940 mm
- Section width
- 12.50 in318 mm
- Sidewall height
- 9.5 in241 mm
- Rim diameter
- 18 in457 mm
- Circumference
- 116.2 in2952 mm
- Revolutions per mile
- 545339 per km
37x12.50R18 in metric
These metric 18-inch sizes are within 3% of a 37x12.50R18's height and within about an inch of its width. Metric sizes are usually a little narrower than the inch size they replace.
Other inch sizes
On 18-inch rims
37 inches tall, other rims
See other sizes about this tall on 37-inch tires, or browse 18-inch tire sizes.
Shop 37x12.50R18 tires
These open each store's own list of 37x12.50R18 tires.
37x12.50R18 questions
What does 37x12.50R18 mean?
It is an inch size: 37 inches overall height, 12.50 inches section width, R for radial, and an 18-inch rim. Inch sizes like this are light-truck tires, sold in load ranges such as C, D or E.
What is 37x12.50R18 in metric?
There is no exact metric twin, but 315/75R18 (36.6 in tall, 12.4 in wide), 305/75R18 (36.0 in tall, 12.0 in wide) are the closest on an 18-inch rim.
How many revolutions per mile does a 37x12.50R18 make?
About 545, worked out from its 116.2-inch unloaded circumference. Loaded on the truck it turns slightly more.