Tire fitment
The 2021 Chevrolet Tahoe base tire size is 265/65R18 — 265 mm wide with a 65% aspect ratio on 18″ rims. 3 OEM sizes are available across trims.
2021 Chevrolet Tahoe
265/65R1831.6″ overall diameter · 172.3 mm sidewall · ~639 rev/mi
| Trim | Tire size | Rim | Diameter | vs Base |
|---|---|---|---|---|
| LS/LT ★ | 265/65R18 | 8.5×18″ | 31.6″ (801.7 mm) | — |
| Premier/Z71 | 275/60R20 | 9×20″ | 33″ (838 mm) | +4.53% |
| High Country | 275/50R22 | 9×22″ | 32.8″ (833.8 mm) | +4% |
The 2021 Chevrolet Tahoe ships with 265/65R18 tires on the base trim — that's an overall diameter of 31.6″. The 265 mm width and 65% sidewall ratio give you 172.3 mm of sidewall cushion between the rim and the road.
Match the load index and speed rating from your door-jamb placard — not just the size. If you're switching sizes, keep the overall diameter within ~3% to avoid speedometer error and potential ABS/traction-control issues.
Factory fitment for the 2021 Chevrolet Tahoe; verify against your door-jamb placard or owner's manual.
The base 2021 Chevrolet Tahoe uses 265/65R18 tires — 265 mm wide, 65% aspect ratio, on 18-inch rims. The overall diameter is 31.6″ (801.7 mm). Higher trims use different sizes — see the table above. Confirm against your door-jamb placard.
Yes, within limits. Keep the overall diameter within about 3% of 31.6″ to avoid speedometer error and clearance issues. A wider tire may improve grip, but match the load and speed ratings your Tahoe requires.
265/65R18 tires have an overall diameter of 31.6″ (801.7 mm), with a 172.3 mm sidewall height. That's about 639 revolutions per mile.
The 2021 Chevrolet Tahoe tire sizes shown are OEM factory fitments. Confirm your exact tire size, load rating, and speed rating against the door-jamb placard or owner's manual before buying tires.