305/35R22
305/35R22 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 30.41″ diameter with a 4.20″ sidewall (35% of section width), this size turns 663 revolutions per mile.
About 305/35R22
305/35R22 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 30.41″ overall diameter, 305/35R22 turns 663 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 35% aspect ratio gives it an ultra-low-profile sidewall tuned for maximum steering precision — at the cost of ride comfort and rim protection. 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 295/35R22 drops diameter by 0.91%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 315/35R22 adds 0.91% 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 30.41″ 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 aliases305/35R22
- Diameter
- 30.41″ / 772.3mm
- Section Width
- 12.01″
- Sidewall
- 4.2″ / 106.75mm
- Circumference
- 95.52″
- Revs/Mile
- 663
285/35R22
- Diameter
- 29.85″ / 758.3mm
- Section Width
- 11.22″
- Sidewall
- 3.93″ / 99.75mm
- Circumference
- 93.79″
- Revs/Mile
- 676
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.91 mph (94.81 km/h). Your speedometer reads 1.81% high versus actual speed.