285/70R17 Tire Size

All You Need to Know About 285/70R17 Tires

285/70R17 tires are 285 mm wide, with a 70% aspect ratio and a 17-inch wheel diameter, producing a 32.7-inch overall diameter and a 7.9-inch sidewall height. The approved rim width range for 285/70R17 size is 8.0–9.5", with a measured rim width of 8.5".

The 285/70R17 is widely treated as a near-33-inch upgrade tire for trucks and SUVs. At 32.7 inches, it is commonly called a "33-inch tire" in the truck and 4x4 community - but the actual calculated diameter falls 0.3 inches short of 33. For spec purposes, it measures 32.7 inches.

Compared with 265/70R17 and 275/70R17, this size pushes further into modification territory, where wheel offset, suspension setup, and fender clearance become more important than the nominal size alone.

285/70R17 Size Quick Specs

• Overall diameter: 32.7"
• Width: 285 mm 
• Sidewall height: 199.5 mm
• Approved rim width range: 8.0–9.5"
• Wheel diameter: 17 in
• Fitting Wheels: 17x8.5 wheels; 17x9 wheels 

Note: The calculated overall diameter of 285/70R17 is ≈32.7 inches. Actual mounted diameter varies by manufacturer and tread design - typically within ±0.1–0.3 inches of that figure.

285/70R17 Common Vehicle Fitment

285/70R17 is typically not a routine stock replacement size. It is more often run on trucks and SUVs that have been leveled, lifted, or set up to accept a (near) 33-inch tire. 

OEM 285/70R17 fitments include the Nissan Armada (2004–2007), Ram 1500 Rebel (2015–2018), and Toyota Tundra (2007–2013). 

In real-world buying terms, the 285/70R17 size is also commonly associated with Tacoma, 4Runner, F-250/F-350, and Ram 2500 builds where the driver is prioritizing off-road traction and ground clearance over stock-equivalent fitment.

285/70R17 Dimensions in Inches

The 285/70R17 size is ≈11.22 inches wide, ≈32.7 inches tall overall, and has a sidewall height of ≈7.85 inches. 

At ≈32.7 inches, 285/70R17 is commonly grouped in the 33-inch tire category used by off-road buyers, while technically it is below 33.0 inches.

285/70R17 in Inches: All Measurements

• Width: 11.22"
• Sidewall height: 7.85"
• Wheel diameter: 17"
• Overall diameter: 32.71" (≈32.7")
• Circumference: 102.76" (≈102.8")

Most Recommended 285/70R17 Tires

Best tires in 285/70R17 size include:

• 285/70R17 all-terrain tires: Continental TerrainContact A/T, Nitto Recon Grappler A/T
• Truck 285 70r17 tires: Toyo Open Country R/T Pro, Nitto Terra Grappler G3
• All-season 285 70r17 tires: General Grabber APT
• 285/70R17 highway tires: Yokohama Geolandar H/T G056

Comparison of 285/70R17 With Similar Tire Sizes

285/70R17 is larger than both 275/70R17 and 265/70R17, but the fitment story changes depending on which one it is replacing. Against 275/70R17, the size jump is still within the normal interchange range. 

Against 265/70R17, the diameter increase crosses the usual ±3% boundary, which is where 285/70R17 size stops behaving like a simple substitute and starts behaving like an actual upsizing modification.

Difference Between 285/70R17 and 275/70R17 Tire Sizes

The 285/70R17 is wider and slightly taller than the 275/70R17:

• Width: 285/70R17 is 10 mm wider than 275/70R17
• Overall diameter: 285/70R17 is ≈0.55 inches (≈1.7%) larger than 275/70R17

That OD difference remains within the ±3% threshold, so 285/70R17 and 275/70R17 sizes are often interchangeable. In practice, the added width is what usually determines whether the larger size clears at full lock and full compression.

Difference Between 285/70R17 and 265/70R17 Tire Sizes

The 285/70R17 is both wider and meaningfully taller than the 265/70R17:

• Width: 285/70R17 is 20 mm wider than 265/70R17
• Overall diameter: 285/70R17 is ≈1.10 inches (≈3.5%) larger than 265/70R17

The difference in overall diameter is beyond the ±3% threshold, so 285/70R17 and 265/70R17 are not direct replacements. This kind of jump usually needs clearance verification and should be treated as a true upsize rather than a stock-equivalent swap.