Tire Size 285/75r17 vs 33×12.5r17

The main difference between 285/75r17 and 33×12.5r17 tire size lies in the section width. The tire size 33×12.5r17 is about 1.3 inch wider than the 285/75r17 tire size. Let’s compare these two tire sizes.

Tire 1 Front View
Tire 2 Front View
Tire 1 Side View
Tire 1 Wheel
circumference 1
Tire 2 Side View
Tire 2 Wheel
/ R
/ R
Parameter235/35 R18205/40 R18Differ.
Tire Height
Section Width
Sidewall Height
Rim Size

Fitment Guide

To avoid issues, the new size should be within 3% of the original tire’s diameter when replacing tires.

The 33×12.5r17 is 2.4% smaller in diameter than the 285/75r17, so it falls within the safe replacement range. However, the wider 33×12.5r17 may require modifications like a leveling kit to prevent rubbing.

Ground Clearance

With a diameter of 33.03 inches, the 33×12.5r17 provides 0.81 inches less ground clearance than the 285/75r17 at 33.83 inches.

This reduced clearance increases the risk of scraping on obstacles. However, the lower profile aesthetic may be preferential for some vehicles.

Gas Mileage

The lighter 33×12.5r17 size with less rolling resistance can provide slightly better fuel efficiency over the 285/75r17. But the difference is modest, given their similar diameters.

Ride Comfort

The 33×12.5r17 offers a firmer ride with its shorter 8.01-inch sidewall versus 8.42 inches on the 285/75r17. This transmits more road impacts into the cabin, but some prefer the responsive handling.


Visually, the 33×12.5r17 appears more muscular with its wider tread and lower profile sidewall than the 285/75r17. This aggressive look suits trucks and SUVs well.

Handling & Stability

The 285/75r17’s taller sidewall flexes more, reducing handling precision slightly. In contrast, the 33×12.5r17’s shorter sidewall height and wider tread make it feel more planted and responsive during cornering.

Noise & Vibration

With a shorter sidewall, the 33×12.5r17 transmits more road noise and vibration over bumps. The 285/75r17 dampens vibrations better for a smoother, quieter ride. But both absorb impacts reasonably well.

285 75r17 In Inches

Durability & Wear

The 285/75r17 may exhibit slightly more even tread wear over time, given its narrower width. The wider 33×12.5r17 distributes the load over more rubber, but the difference in wear is minor between these sizes.

Adverse Conditions

In snow, the narrower 285/75r17 can cut through to the pavement better, while the wider 33×12.5r17 floats more. Off-road, the 33×12.5r17 provides a traction advantage from its sizable footprint.

Speedometer Reading

The 285/75r17 diameter causes a higher speedometer reading than the smaller 33×12.5r17. At an actual speed of 20 mph, the speedometer reads 1.52 mph higher with the 285/75r17 size.

285 75r17 In Inches

What Size is A 33×12.5r17?

The 33×12.5R17 tire has a diameter of 33 inches (839 mm), a section width of 12.5 inches (317.5 mm), and fits a wheel with a diameter of 17 inches.

How Tall Is A 285/75r17 Tire?

The height of a 285/75R17 tire is approximately 33.9 inches (860 mm). This measurement represents the tire’s height or diameter, which is the distance from the ground to the top of the tire.

285/75r17 vs 33x12.5r17

285/75r17 vs 33×12.5r17

This comparison table is designed to provide you with a quick and easy way to understand the differences.

Our Observation
The 285/75R17 offers slightly better ride comfort and noise isolation thanks to its taller sidewall, while the 33×12.5R17 provides a more aggressive aesthetic, better handling, and improved off-road traction from its wider tread and lower profile.

For an SUV or truck used mainly on-road, the 285/75R17 is likely the better choice for its smoother ride and quieter cabin.

For off-road adventures or improved cornering on pavement, the 33×12.5R17 is recommended for its stability and traction advantages. The differences are minor, so choosing based on intended use and personal preference is advised.

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