2026 GMC Sierra EV — Denali
The 2026 GMC Sierra EV Denali shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
275/50R22
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (137.5 mm) |
| Rim diameter | 22" |
| Overall tire diameter | ~32.8" |
| Revolutions per mile | ~614 |
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275/50R24
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (137.5 mm) |
| Rim diameter | 24" |
| Overall tire diameter | ~34.8" |
| Revolutions per mile | ~579 |
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What this size means for your GMC Sierra EV
On the 2026 GMC Sierra EV Denali, the factory 275/50R22 measures about 32.8″ in overall diameter with a 137.5 mm (5.4″) sidewall, and completes roughly 614 revolutions per mile. Its 50-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a large-diameter fitment.
The 275/50R22 and 275/50R24 differ by about 2″ (6.1%) in overall diameter; a gap this size is enough to affect speedometer and odometer readings, so confirm which one your vehicle actually left the factory with.
Other 2026 GMC Sierra EV trims
GMC Sierra EV tire sizes by year
- 2025 GMC Sierra EV 275/50R24
- 2024 GMC Sierra EV 275/50R24
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.