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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.

Overall diameter
32.99″
838 mm
Section width
10.83″
275 mm
Sidewall
6.50″
165 mm
Circumference
103.65″
Revs / mile
611
Rim
20″

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

Type to search · try 275/65R18 or "33" for inch aliases
Common upsizes from 275/60R20:
Don't know your stock size? Load it by vehicle:

275/60R20

Diameter
32.99″ / 838mm
Section Width
10.83
Sidewall
6.5″ / 165mm
Circumference
103.65
Revs/Mile
611
See tires in 275/60R20

255/60R20

Diameter
32.05″ / 814mm
Section Width
10.04
Sidewall
6.02″ / 153mm
Circumference
100.68
Revs/Mile
629
See tires in 255/60R20
275/60R20 · 32.99255/60R20 · 32.05

Speedometer & Diameter Impact

Diameter Change
-2.86%
Sidewall Change
-0.48″
Revs/Mile Δ
18
mph

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

Similar sizes on the same rim

Speedometer impact if you upsize from 275/60R20