255/65R16
255/65R16 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 29.05″ diameter with a 6.53″ sidewall (65% of section width), this size turns 694 revolutions per mile.
About 255/65R16
255/65R16 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 29.05″ overall diameter, 255/65R16 turns 694 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 16″ rim pairing is typical for light-truck, crossover, and mid-size SUV applications, so compatible wheels are easy to source new or used. Going one step shorter to 235/70R16 drops diameter by 0.34%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 245/70R16 adds 1.56% 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 29.05″ 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 aliases255/65R16
- Diameter
- 29.05″ / 737.9mm
- Section Width
- 10.04″
- Sidewall
- 6.53″ / 165.75mm
- Circumference
- 91.27″
- Revs/Mile
- 694
235/65R16
- Diameter
- 28.03″ / 711.9mm
- Section Width
- 9.25″
- Sidewall
- 6.01″ / 152.75mm
- Circumference
- 88.05″
- Revs/Mile
- 720
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 57.89 mph (93.16 km/h). Your speedometer reads 3.52% high versus actual speed.