37x13.50R18 Tire Size: 37.0" Tall
Straight answer
A 37x13.50R18 stands 37.0 inches tall and 13.5 inches wide on a 18-inch wheel. NTW stocks 9 tire models in this size right now.
37x13.50R18 dimensions
Overall diameter
37.00"
Section width
13.50"
Sidewall height
9.50"
Wheel diameter
18"
Circumference
116.2"
Revolutions per mile
545
≈ 343/70R18 metric. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 37x13.50R18 means
- 37Overall diameter: 37.0" tall
- 13.50Section width: 13.50" wide
- RRadial construction
- 18Fits a 18-inch wheel
Want the full rundown on sidewall codes, load index, and speed rating? Read how to read a tire size.
37x13.50R18 compared to nearby 18-inch sizes
Speedometer column assumes your truck is calibrated for 37x13.50R18 and reads 65 mph.
| Size | Height | vs 37x13.50R18 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 33x12.50R18 | 33.0" | -4.0" (-10.8%) | -1.0" | 58.0 mph | Full comparison |
| 275/70R18 | 33.2" | -3.8" (-10.4%) | -2.7" | 58.2 mph | Full comparison |
| 295/70R18 | 34.3" | -2.7" (-7.4%) | -1.9" | 60.2 mph | Full comparison |
| 325/65R18 | 34.6" | -2.4" (-6.4%) | -0.7" | 60.8 mph | Full comparison |
| 35x12.50R18 | 35.0" | -2.0" (-5.4%) | -1.0" | 61.5 mph | Full comparison |
Tires in stock in 37x13.50R18
9 models, 9 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily. Includes metric sizes NTW lists as this size's equivalent.
| Tire | Type | Options | From |
|---|---|---|---|
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 1 | $525 |
| Bfgoodrich Mud-Terrain T/A KM3 | Mud Terrain | 1 | $549 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $478 |
| Interco Super Swamper SS-M16 | Mud Terrain | 1 | $594 |
| Mickey Thompson Baja Legend MTZ | Mud Terrain | 1 | $486 |
| Nitto Ridge Grappler | All Terrain | 1 | $511 |
| Toyo Open Country M/T | Mud Terrain | 1 | $536 |
| Toyo Open Country R/T | All Terrain | 1 | $497 |
| Toyo Open Country R/T Pro | All Terrain | 1 | $519 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 37x13.50R18 tire in inches?+
A 37x13.50R18 is 37.00 inches tall and 13.50 inches wide, with a 9.50-inch sidewall on a 18-inch wheel. Real mounted tires vary a few tenths of an inch by brand, load range, and rim width.
What is 37x13.50R18 in metric?+
The nearest metric equivalent is 343/70R18. Flotation sizes like 37x13.50R18 list the actual height and width in inches, so there's no math to do: 37" tall, 13.50" wide.
What does 37x13.50R18 mean?+
37x13.50R18 is flotation sizing, which just tells you the dimensions in inches: 37" tall, 13.50" wide, on a 18-inch wheel.
Looking for another size? See the full truck tire size chart.