185/65R14
185/65R14 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 23.47″ diameter with a 4.73″ sidewall (65% of section width), this size turns 859 revolutions per mile.
About 185/65R14
185/65R14 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 23.47″ overall diameter, 185/65R14 turns 859 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 65% aspect ratio gives it a balanced sidewall — enough compliance for daily comfort without vague steering. The 14″ rim pairing is typical for compact-car and economy-vehicle platforms, so compatible wheels are easy to source new or used. Going one step shorter to 175/65R14 drops diameter by 2.18%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 175/70R14 adds 0.75% 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 23.47″ 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 aliases185/65R14
- Diameter
- 23.47″ / 596.1mm
- Section Width
- 7.28″
- Sidewall
- 4.73″ / 120.25mm
- Circumference
- 73.73″
- Revs/Mile
- 859
175/65R14
- Diameter
- 22.96″ / 583.1mm
- Section Width
- 6.89″
- Sidewall
- 4.48″ / 113.75mm
- Circumference
- 72.12″
- Revs/Mile
- 879
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.69 mph (94.45 km/h). Your speedometer reads 2.18% high versus actual speed.