265/40R22
265/40R22 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 30.35″ diameter with a 4.17″ sidewall (40% of section width), this size turns 665 revolutions per mile.
About 265/40R22
265/40R22 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 30.35″ overall diameter, 265/40R22 turns 665 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 40% 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 285/35R22 drops diameter by 1.62%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 275/40R22 adds 1.04% 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 30.35″ 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 aliases265/40R22
- Diameter
- 30.35″ / 770.8mm
- Section Width
- 10.43″
- Sidewall
- 4.17″ / 106mm
- Circumference
- 95.34″
- Revs/Mile
- 665
265/35R22
- Diameter
- 29.3″ / 744.3mm
- Section Width
- 10.43″
- Sidewall
- 3.65″ / 92.75mm
- Circumference
- 92.06″
- Revs/Mile
- 688
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 57.94 mph (93.24 km/h). Your speedometer reads 3.44% high versus actual speed.