You're viewing new Toyo Open Country R/T Pro Tire | 285/55R20 | E/10 | Manufacturer Part No 358550.
Toyo Open Country R/T Pro LT285/55R20
The Toyo Open Country R/T Pro LT285/55R20 is one of the most versatile and popular truck tire upgrades in the US — and for good reason. Whether you're driving a Ford F-150, RAM 1500, Chevrolet Silverado, GMC Sierra, or Toyota Tundra, this size delivers an aggressive rugged-terrain look with real-world off-road performance on your factory or slightly upgraded 20" wheels. At approximately 32.3 inches in diameter, this tire works perfectly with a leveling kit or a 2-3" lift on most popular trucks. The R/T hybrid tread pattern provides confident grip on trail surfaces without the harshness or noise penalty of a full mud terrain. Dual-rated Load Range E construction (122/119Q) means your towing and hauling capacity is fully maintained. If you want one tire that handles everything from the daily commute to weekend adventures, this is it.
Overview
The Open Country R/T Pro LT285/55R20 is a rugged-terrain hybrid designed for drivers who need more than a standard all-terrain without committing to the full compromises of a mud-terrain. The LT285/55R20: 285mm (~11.2") wide, 55% aspect ratio, 20" rim. Approximately 32.3" overall diameter. One of the most popular light-truck tire sizes in the US — stock on many trucks and a common upgrade on leveled or mildly lifted modern trucks. On the highway, the LT285/55R20 tracks straight and brakes predictably — far quieter than a full mud-terrain — making it a genuine daily driver in this size. On trails, the open shoulder voids and staggered lugs provide dependable traction in dirt, gravel, and light mud without excessive wheelspin or sidewall damage. It is a strong match for daily driver with light-to-moderate off-road capability, leveled trucks, weekend trail use, overlanding, replacement/upgrade from factory all-season tires, and carries a 122/119Q load rating for dependable performance under demanding conditions.
Key Features & Specifications
- Most popular light-duty truck size — engineered for F-150, RAM 1500, Silverado, and more
- ~32.3" diameter for perfect leveled-truck fitment on 20" wheels
- Load Range E dual-rated for towing, hauling, and off-road demands
- R/T tread delivers off-road performance without sacrificing highway comfort
- Silica-enhanced compound provides all-season wet grip
- Stone ejectors and self-cleaning tread voids handle trail debris
- Bold sidewall appearance upgrades the look of any light-duty truck
Load Range E construction, load rating 122/119Q, size LT285/55R20. These elements work together to deliver confident traction on and off the road with long-lasting durability.
On‑Road and Off‑Road Performance
On the highway, the LT285/55R20 tracks straight and brakes predictably — far quieter than a full mud-terrain — making it a genuine daily driver in this size. The tread void ratio is tuned to balance mud evacuation with a stable contact patch, so braking and steering remain predictable on wet or dry pavement. In winter conditions, the sipes and block edges help in unpacked snow, though this is not a dedicated winter tire — consider winter tires where conditions are severe. On trails, the open shoulder voids and staggered lugs provide dependable traction in dirt, gravel, and light mud without excessive wheelspin or sidewall damage. Stone ejecting grooves help keep the tread clear, reducing rock drilling and protecting the casing over rough fire roads and construction sites.
Off‑Road Capability
The shoulder lugs and alternating block edges on the LT285/55R20 create side bite in ruts and technical sections. The cut and chip resistant compound limits damage on rocky terrain, and airing down within safe limits increases the footprint for sand and rock crawling — always reinflate before returning to highway speeds. Avoid excessive wheelspin on sharp surfaces, and rotate regularly to keep wear even across drive axles. This size is particularly well-suited for daily driver with light-to-moderate off-road capability, leveled trucks, weekend trail use, overlanding, replacement/upgrade from factory all-season tires.
Fitment & Compatibility
Trucks: Ford F-150 (2015+), RAM 1500 (2013+), Chevrolet Silverado 1500, GMC Sierra 1500, Toyota Tundra (2022+)
SUVs: Ford Expedition, Chevrolet Tahoe, GMC Yukon, Nissan Armada
Off-Road & Specialty Vehicles: RAM 1500 Rebel, Ford F-150 FX4, Toyota Tundra TRD Pro, Chevrolet Silverado Trail Boss
Always verify fitment using your vehicle's door-jamb label. Confirm clearance at full steering lock and suspension compression. Larger or wider sizes may require a leveling kit, lift, corrected wheel offset, or minor trimming depending on your specific vehicle configuration.
Sizes & Load Rating
This listing is for size LT285/55R20 with a load rating of 122/119Q (Load Range E). This rating makes it suitable for daily driving, towing, and trail use on light-duty and mid-size platforms, though always verify that load index meets or exceeds your vehicle's minimum requirements, especially if you tow or carry heavy payloads regularly.
Pricing & Value
Pricing for the LT285/55R20 size reflects its Load Range E construction and rugged-terrain capability. Installed cost includes mounting, balancing, TPMS service, and alignment. Look at total ownership value — including durability on rough roads, balanced on-road manners, and dependable trail traction — when comparing against alternatives. Regular rotations, proper inflation, and periodic alignments extend tread life and maximize your investment.
Open Country R/T Pro LT285/55R20 vs Alternatives
In the LT285/55R20 size category, the Open Country R/T Pro competes with aggressive all-terrains like the BFGoodrich All-Terrain T/A KO2 and Falken Wildpeak AT3W, typically offering a more open lug pattern for added loose-surface bite. Compared with other rugged-terrain hybrids such as the Nitto Ridge Grappler or Goodyear Wrangler Duratrac, the R/T Pro emphasizes durability and off-road traction while keeping composed on-road manners. Related sizes worth comparing include LT305/55R20, LT275/65R20, LT285/60R20 — related 20-inch options for buyers deciding width vs diameter tradeoffs. The best choice depends on your priorities — maximum trail capability or quieter daily comfort.
