305/45R22 Tire Size: 32.8" Tall, a 33-Inch Tire
Straight answer
A 305/45R22 stands 32.8 inches tall and 12.0 inches wide on a 22-inch wheel, which makes it a 33-inch tire in truck-speak. NTW stocks 8 tire models in this size right now.
305/45R22 dimensions
Overall diameter
32.81"
Section width
12.01"
Sidewall height
5.40"
Wheel diameter
22"
Circumference
103.1"
Revolutions per mile
615
≈ 32.8x12.0R22 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 305/45R22 means
- 305Section width: 305 mm (12.0") wall to wall
- 45Aspect ratio: sidewall is 45% of the width, so 5.4" tall
- RRadial construction
- 22Fits a 22-inch wheel
Want the full rundown on sidewall codes, load index, and speed rating? Read how to read a tire size.
305/45R22 compared to nearby 22-inch sizes
Speedometer column assumes your truck is calibrated for 305/45R22 and reads 65 mph.
| Size | Height | vs 305/45R22 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 285/45R22 | 32.1" | -0.7" (-2.2%) | -0.8" | 63.6 mph | Full comparison |
| 275/50R22 | 32.8" | +0.0" (+0.1%) | -1.2" | 65.0 mph | Full comparison |
| 33x12.50R22 | 33.0" | +0.2" (+0.6%) | +0.5" | 65.4 mph | Full comparison |
| 325/50R22 | 34.8" | +2.0" (+6.1%) | +0.8" | 68.9 mph | Full comparison |
| 35x12.50R22 | 35.0" | +2.2" (+6.7%) | +0.5" | 69.3 mph | Full comparison |
Rule of thumb: inside 3% of stock diameter feels stock; past 8 to 10% and most owners budget for a re-gear. Run your exact numbers in the tire size calculator, or check what stepping down to 285/45R22 does.
Tires in stock in 305/45R22
8 models, 8 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 1 | $469 |
| Falken Wildpeak A/T4W | All Terrain | 1 | $450 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $487 |
| Nitto Recon Grappler A/T | All Terrain | 1 | $460 |
| Nitto Ridge Grappler | All Terrain | 1 | $489 |
| Toyo Open Country A/T III | All Terrain | 1 | $481 |
| Toyo Open Country R/T Trail | All Terrain | 1 | $495 |
| Toyo Proxis ST3 | Highway | 1 | $189 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 305/45R22 tire in inches?+
A 305/45R22 is 32.81 inches tall and 12.01 inches wide, with a 5.40-inch sidewall on a 22-inch wheel. Real mounted tires vary a few tenths of an inch by brand, load range, and rim width.
Is 305/45R22 a 33-inch tire?+
Close enough that everybody calls it one. It measures 32.8 inches, so it's sold and talked about as a 33. The flotation equivalent is 32.8x12.0R22.
What does 305/45R22 mean?+
305/45R22 means a tire 305 millimeters wide with a sidewall 45% as tall as it is wide, built for a 22-inch wheel.
305/45R22 vs 325/50R22: how much bigger?+
325/50R22 is 2.0 inches taller (6.1%) and 0.8 inches wider. Going from 305/45R22 to 325/50R22, a speedometer reading 65 mph means you're actually doing 68.9.
Looking for another size? See the full truck tire size chart.