285/45R22 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 32.10 in | 815 mm |
| Section width | 11.22 in | 285 mm |
| Sidewall height | 5.05 in | 128.2 mm |
| Wheel diameter | 22 in | 559 mm |
| Circumference | 100.8 in | 2,561 mm |
| Revolutions per mile | 628.3 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 285 × 45% = 128.2 mm ÷ 25.4 | 5.05 in |
| Overall height | 22 + 2 × 5.05 | 32.10 in |
| Width | 285 mm ÷ 25.4 | 11.22 in |
| Circumference | π × 32.10 | 100.8 in |
| Revs per mile | 63,360 ÷ 100.8 | 628.3 |
With a 5.0 in sidewall this is a medium sidewall: a balance of cushion and response. Real tires vary by brand and model, and the loaded radius under the vehicle is a bit smaller than this unloaded figure.
One step either way on a 22 in wheel
Each row changes one thing and shows the height change against 285/45R22, plus what 60 mph on the speedometer would really be if you swapped to that size.
| Change | Size | Height | Height change | 60 mph shows as | Verdict |
|---|---|---|---|---|---|
| Wider | 295/45R22 (compare) | 32.5 in | +1.1% | 60.7 mph | Close match |
| Narrower | 275/45R22 (compare) | 31.7 in | -1.1% | 59.3 mph | Close match |
| Taller sidewall | 285/50R22 (compare) | 33.2 in | +3.5% | 62.1 mph | Check clearance |
| Shorter sidewall | 285/40R22 (compare) | 31.0 in | -3.5% | 57.9 mph | Check clearance |
| Wider, shorter sidewall | 295/40R22 (compare) | 31.3 in | -2.5% | 58.5 mph | Close match |
| Narrower, taller sidewall | 275/50R22 (compare) | 32.8 in | +2.3% | 61.4 mph | Close match |
Calculated sizes within ±3% on other wheels
Plus and minus sizes that keep the overall height within about 3% (a rule of thumb from Discount Tire and 1010tires), widths within 30 mm. Calculated, not a list of tires on sale: check that a tire exists in that size.
21 in wheels (one wheel size smaller)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 255/55R21 (compare) | 32.0 in | -0.2% | -30 mm |
| 315/45R21 (compare) | 32.2 in | +0.2% | +30 mm |
| 285/50R21 (compare) | 32.2 in | +0.4% | +0 mm |
| 275/50R21 (compare) | 31.8 in | -0.8% | -10 mm |
23 in wheels (one wheel size larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 255/45R23 (compare) | 32.0 in | -0.2% | -30 mm |
| 285/40R23 (compare) | 32.0 in | -0.4% | +0 mm |
| 295/40R23 (compare) | 32.3 in | +0.6% | +10 mm |
| 265/45R23 (compare) | 32.4 in | +0.9% | -20 mm |
24 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 295/35R24 (compare) | 32.1 in | +0.1% | +10 mm |
| 255/40R24 (compare) | 32.0 in | -0.2% | -30 mm |
| 285/35R24 (compare) | 31.9 in | -0.8% | +0 mm |
| 265/40R24 (compare) | 32.3 in | +0.8% | -20 mm |
Try it with your numbers
Compare 285/45R22 with another size · Convert to metric or find a 33 in size · Sizes that fit my wheel
Calculated from the size alone. Real tires vary a little by brand and model, and the loaded radius is a bit smaller. Confirm the wheel width range, clearance, load index and speed rating for your vehicle. See how to read a tire size, the load index chart and the speed rating chart.
Browse: all sizes in inches · 285/40R22 · 305/40R22.