2024 GMC Yukon: the quick answer
The 2024 GMC Yukon 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.
Tire fitment
2024 GMC Yukon tire size
The 2024 GMC Yukon base tire size is 265/65R18 — 265 mm wide with a 65% aspect ratio on 18″ rims. 3 OEM sizes are available across trims.
2024 GMC Yukon
265/65R1831.6″ overall diameter · 172.3 mm sidewall · ~639 rev/mi
| Trim | Tire size | Rim | Diameter | vs Base |
|---|---|---|---|---|
| SLE ★ | 265/65R18 | 8.5×18″ | 31.6″ (801.7 mm) | — |
| SLT/AT4 (2021-2024) / Elevation (2025) | 275/60R20 | 9×20″ | 33″ (838 mm) | +4.53% |
| Denali/Denali Ultimate | 275/50R22 | 9×22″ | 32.8″ (833.8 mm) | +4% |
Before you buy tires
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 2024 GMC Yukon; verify against your door-jamb placard or owner's manual.
Sources & verification
Source links and page assumptions reviewed .
- Tire Rack: how to read tire size on the sidewall — Industry-standard explanation of tire size markings, load index, and speed rating.
- NHTSA: TireWise tire safety guidance — Official U.S. guidance on tire size, the Tire and Loading Information placard, load ratings, and maintenance.
FAQ
What tire size does the 2024 GMC Yukon use?
The base 2024 GMC Yukon 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.
Can I use a different tire size on my 2024 Yukon?
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 Yukon requires.
What is the overall diameter of 265/65R18 tires?
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 2024 GMC Yukon 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.