GMC Canyon AT4 Tire Size
Factory manual tire size & fitment for the GMC Canyon AT4. Exact specs extracted from the LEMON service manual archive.
Last updated: 2026-10-29 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2025 GMC Canyon AT4 tire: Size: 265/65R18 114T | PSI: 35 - 35 | Rim: 8.5J.
| Generation | Years | Top spec |
|---|---|---|
| 2025 | 2025 | Size: 265/65R18 114T | PSI: 35 - 35 | Rim: 8.5J |
| 2023-2024 | 2023-2024 | Size: 265/65R18 114T | Optional: LT275/65R18 C 113/11 | PSI: 35 - 35 | Rim: 8.5J |
| 2022 | 2022 | Size: 265/65R17 112S | PSI: 35 - 35 | Rim: 8J |
This vehicle's factory manual
The spec is above. This opens the 2025 GMC Canyon AT4 factory book. Use another year if yours is older.
GMC Canyon AT4 maintenance schedule
Know the exact tire size job for your GMC Canyon AT4
2025 GMC Canyon AT4 tire: Size: 265/65R18 114T | PSI: 35 - 35 | Rim: 8.5J.
Wheel and tire sizes change by trim, package, and wheel diameter. Use the door-jamb placard as the final authority. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
The button opens the factory book for this vehicle. Use the engine picker only when your trim is not the one this page already matched.
2025
2023-2024
2022
2021
Manual already checked Amazon for you
You came here for the exact spec. Now here is the exact part — plus the two things people always forget and have to run back to the store for.
GMC Canyon AT4 Tires — 265/65R18
Confirmed size: 265/65R18. Match the speed rating and load index on your door jamb sticker.
We earn a small commission if you buy through these links — at zero extra cost to you. We only suggest items that match the factory specs on this page.
Tires — Manual's Parts List
Exact size, exact pressure, ready to roll.
- 1TiresShop →
265/65R18 — match speed rating and load index from door sticker
- 2TPMS Valve Stem KitShop →
Replace rubber valves when mounting new tires
- 3Digital Tire Pressure GaugeShop →
Gas station gauges are usually 5+ PSI off
- 4Portable Air CompressorShop →
Inflate at home instead of driving to the gas station
Get everything at once
One search shows all of the above on a single page.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Tire Pressure Gauge
Digital or analog gauge for precise pressure checks.
Portable Air Compressor
Inflate your tires anywhere, anytime.
Tire Tread Depth Tool
Check if your tires are safe and ready for the road.
Valve Stem Caps
Keep dirt and moisture out of your tire valves.
Tire Repair Kit
Useful emergency backup for puncture-prone drivers.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your GMC Canyon AT4 so the job is ready when the parts arrive.
Frequently Asked Questions
- What size tires fit the GMC Canyon AT4?
- 2025 GMC Canyon AT4 uses Size: 265/65R18 114T | PSI: 35 - 35 | Rim: 8.5J per the factory manual.
- Where is this data from?
- Extracted directly from the LEMON factory service manual archive. Sources are cited per generation.
- What tire size does a GMC Canyon AT4 use?
- 2025 GMC Canyon AT4 tire: Size: 265/65R18 114T | PSI: 35 - 35 | Rim: 8.5J.
- Can I use a different tire size on my GMC Canyon AT4?
- Deviating from the factory tire size changes speedometer accuracy, handling, and load capacity. If you change sizes, ensure the overall diameter stays within 3% of OEM and the load/speed ratings meet or exceed factory specs.
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-10-29