315/45R22
315/45R22 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 33.16″ diameter with a 5.58″ sidewall (45% of section width), this size turns 608 revolutions per mile.
About 315/45R22
315/45R22 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 33.16″ overall diameter, 315/45R22 turns 608 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 45% aspect ratio gives it a low-profile sidewall that delivers sharp steering response but transmits road imperfections. The 22″ rim pairing is typical for heavy-duty, off-road-lifted, and show-build applications, so compatible wheels are easy to source new or used. Going one step shorter to 305/45R22 drops diameter by 1.07%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 295/50R22 adds 1.37% diameter — also inside the safe window, with marginally taller ride height. If you are shopping for a direct replacement, any tire within roughly ±0.7″ of the 33.16″ stock diameter (about ±2% in percentage terms) will keep ABS, TPMS, and odometer readings inside the vehicle's designed tolerance.
Compare with another size
275/65R18 or "33" for inch aliases315/45R22
- Diameter
- 33.16″ / 842.3mm
- Section Width
- 12.4″
- Sidewall
- 5.58″ / 141.75mm
- Circumference
- 104.18″
- Revs/Mile
- 608
295/45R22
- Diameter
- 32.45″ / 824.3mm
- Section Width
- 11.61″
- Sidewall
- 5.23″ / 132.75mm
- Circumference
- 101.95″
- Revs/Mile
- 621
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.72 mph (94.5 km/h). Your speedometer reads 2.14% high versus actual speed.