255/50R20 is a tire size notation. It describes geometry but does not establish the load, speed, tire class, wheel approval or fit of a particular replacement.
As an Amazon Associate I earn from qualifying purchases.
How to read this size
- Nominal width: 255 mm
- Aspect ratio: 50 %
- Wheel diameter: 20.0 in
- Calculated nominal diameter: 763.0 mm
Calculated nominal diameter is an arithmetic estimate from the size code; actual product measurements vary.
Before ordering tires
Read the driver-door tire placard. Match the installed wheel, axle, tire class, load index, speed rating and any OE marking. The size alone cannot approve a replacement SKU. Tire-sidewall maximum pressure is not your vehicle’s cold inflation pressure.
Vehicles recorded with this size
| Model year and vehicle | Trim / option | Axle | Service |
|---|---|---|---|
| 2025 Acura MDX | A-Spec | front_rear | Not documented |
| 2025 Acura MDX | A-Spec Advance | front_rear | Not documented |
| 2025 Acura MDX | Advance | front_rear | Not documented |
| 2025 Acura MDX | Technology | front_rear | Not documented |
| 2025 Honda Pilot | Black Edition | front_rear | Not documented |
| 2025 Honda Pilot | Elite | front_rear | Not documented |
| 2025 Honda Pilot | Sport | front_rear | Not documented |
| 2025 Honda Pilot | Touring | front_rear | Not documented |
| 2025 Infiniti QX60 | Autograph | unspecified | Not documented |
| 2025 Infiniti QX60 | Luxe | unspecified | Not documented |
| 2025 Infiniti QX60 | Sensory | unspecified | Not documented |
| 2023 Mazda CX-9 | Carbon Edition | unspecified | Not documented |
| 2023 Mazda CX-9 | Grand Touring | unspecified | Not documented |
| 2023 Mazda CX-9 | Signature | unspecified | Not documented |
| 2023 Mazda CX-9 | Touring Plus | unspecified | Not documented |
| 2010 Mercury Mountaineer | Premier | unspecified | Not documented |
| 2025 Nissan Pathfinder | Platinum | front_rear | Not documented |
| 2025 Nissan Pathfinder | SL | front_rear | Not documented |
| 2009 Saab 9-7X | Aero | unspecified | Not documented |
| 2025 Volkswagen Atlas | SE with Tech | unspecified | Not documented |
| 2025 Volkswagen Atlas | SEL | unspecified | Not documented |
Exact product variants in research
| Tire line | Manufacturer part number | Service |
|---|---|---|
| Kumho TA92 | 2345891 | 109V |
Explore 255/50R20 tires on Amazon
Amazon search results may mix tire classes, load and speed ratings, OE markings and package quantities. Match the full requirement on your actual vehicle before ordering.
(paid link)
Search 255/50R20 tires on AmazonCompare sizes with the tire size calculator. It is an educational geometry comparison, not a fitment ruling.
Sources and scope
- American Honda / Acura — 2025 Acura MDX Specifications & Features (checked 2026-11-01)
- American Honda — 2025 Honda Pilot Specifications & Features (checked 2026-11-01)
- Nissan North America — 2025 Nissan Pathfinder Specifications (checked 2026-11-01)
- Goodyear US — Find 2025 Volkswagen Atlas Tires (checked 2026-11-01)
- Goodyear — Find 2023 Mazda CX-9 Tires | Goodyear (checked 2026-11-01)
- Goodyear — Find 2025 Infiniti QX60 Tires | Goodyear (checked 2026-11-01)
- Goodyear — Find 2010 Mercury Mountaineer Tires | Goodyear (checked 2026-11-01)
- Goodyear — Find 2009 Saab 9-7X Tires | Goodyear (checked 2026-11-01)
- Kumho Tire USA — Original Equipment — selected Hyundai and Kia product-code rows (checked 2026-11-01)
Research checked November 2, 2026. A source-observed size is not final product fitment. Confirm the actual vehicle and current manufacturer guidance.