265/55R20
265/55R20 ships as an OEM size on the Toyota Sequoia. At 31.48″ diameter with a 5.74″ sidewall (55% of section width), this size turns 641 revolutions per mile.
About 265/55R20
Factory fitments for 265/55R20 include the Toyota Sequoia — meaning replacement tires in this size see steady demand and broad brand availability. At 31.48″ overall diameter, 265/55R20 turns 641 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 55% aspect ratio gives it a moderate sidewall suited to sporty street driving and responsive turn-in. The 20″ rim pairing is typical for luxury SUV and performance-oriented platforms, so compatible wheels are easy to source new or used. Going one step shorter to 255/55R20 drops diameter by 1.38%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 245/60R20 adds 0.31% 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 31.48″ 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 aliases265/55R20
- Diameter
- 31.48″ / 799.5mm
- Section Width
- 10.43″
- Sidewall
- 5.74″ / 145.75mm
- Circumference
- 98.89″
- Revs/Mile
- 641
245/55R20
- Diameter
- 30.61″ / 777.5mm
- Section Width
- 9.65″
- Sidewall
- 5.31″ / 134.75mm
- Circumference
- 96.16″
- Revs/Mile
- 659
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.35 mph (93.9 km/h). Your speedometer reads 2.75% high versus actual speed.