305/50R22
305/50R22 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 34.01″ diameter with a 6.00″ sidewall (50% of section width), this size turns 593 revolutions per mile.
About 305/50R22
305/50R22 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 34.01″ overall diameter, 305/50R22 turns 593 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 50% aspect ratio gives it a moderate sidewall suited to sporty street driving and responsive turn-in. 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 295/50R22 drops diameter by 1.16%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 315/50R22 adds 1.16% 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 34.01″ 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 aliases305/50R22
- Diameter
- 34.01″ / 863.8mm
- Section Width
- 12.01″
- Sidewall
- 6 ″ / 152.5mm
- Circumference
- 106.84″
- Revs/Mile
- 593
285/50R22
- Diameter
- 33.22″ / 843.8mm
- Section Width
- 11.22″
- Sidewall
- 5.61″ / 142.5mm
- Circumference
- 104.37″
- Revs/Mile
- 607
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.61 mph (94.32 km/h). Your speedometer reads 2.32% high versus actual speed.