275/60R20
275/60R20 ships as an OEM size on the Chevrolet Silverado 1500, Chevrolet Suburban, Chevrolet Tahoe. At 32.99″ diameter with a 6.50″ sidewall (60% of section width), this size turns 611 revolutions per mile.
About 275/60R20
Factory fitments for 275/60R20 include the Chevrolet Silverado 1500, Chevrolet Suburban, Chevrolet Tahoe — meaning replacement tires in this size see steady demand and broad brand availability. At 32.99″ overall diameter, 275/60R20 turns 611 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 60% aspect ratio gives it a balanced sidewall — enough compliance for daily comfort without vague steering. 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 265/60R20 drops diameter by 1.43%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 255/65R20 adds 0.18% 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 32.99″ 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 aliases275/60R20
- Diameter
- 32.99″ / 838mm
- Section Width
- 10.83″
- Sidewall
- 6.5″ / 165mm
- Circumference
- 103.65″
- Revs/Mile
- 611
255/60R20
- Diameter
- 32.05″ / 814mm
- Section Width
- 10.04″
- Sidewall
- 6.02″ / 153mm
- Circumference
- 100.68″
- Revs/Mile
- 629
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.28 mph (93.8 km/h). Your speedometer reads 2.86% high versus actual speed.
Vehicles that fit 275/60R20
- 2024 Chevrolet Silverado 1500LTZ
- 2023 Chevrolet Silverado 1500LTZ
- 2022 Chevrolet Silverado 1500LTZ
- 2021 Chevrolet Silverado 1500LTZ
- 2020 Chevrolet Silverado 1500LTZ
- 2024 Chevrolet SuburbanLT
- 2023 Chevrolet SuburbanLT
- 2022 Chevrolet SuburbanLT
- 2021 Chevrolet SuburbanLT
- 2024 Chevrolet TahoeLT
- 2023 Chevrolet TahoeLT
- 2022 Chevrolet TahoeLT