205/70R17
205/70R17 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 28.30″ diameter with a 5.65″ sidewall (70% of section width), this size turns 713 revolutions per mile.
About 205/70R17
205/70R17 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 28.30″ overall diameter, 205/70R17 turns 713 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 70% aspect ratio gives it a tall, compliant sidewall that absorbs bumps well and protects rims off-road. The 17″ 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 215/65R17 drops diameter by 1.04%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 225/65R17 adds 0.77% 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 28.30″ 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 aliases205/70R17
- Diameter
- 28.3″ / 718.8mm
- Section Width
- 8.07″
- Sidewall
- 5.65″ / 143.5mm
- Circumference
- 88.9″
- Revs/Mile
- 713
205/65R17
- Diameter
- 27.49″ / 698.3mm
- Section Width
- 8.07″
- Sidewall
- 5.25″ / 133.25mm
- Circumference
- 86.37″
- Revs/Mile
- 734
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.29 mph (93.81 km/h). Your speedometer reads 2.85% high versus actual speed.