Tire Size 285/75R17 vs 35×12.50r17

The main difference between 285/75r17 and 35×12.50R17 tire sizes lies in their section width, which impacts various performance factors. The 35×12.50R17 tire size is about 1.3 inches wider than the 285/75r17 tire size.

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

The 35×12.50R17 tire is 3.5% larger in overall diameter compared to the 285/75R17. This exceeds the 3% diameter difference threshold, meaning the 35-inch tire may require adaptations like a lift kit to fit correctly and avoid rubbing or clearance issues.

Ground Clearance

With a diameter of 35.03 inches, the 35×12.50R17 provides 1.2 inches more ground clearance than the 33.83-inch 285/75R17.

This added clearance benefits off-road driving by preventing scrapes over obstacles. However, the larger 35-inch tire causes a lower speedometer reading than the 285/75R17.

Gas Mileage

The 285/75R17’s slightly smaller contact patch and rotational mass offer better fuel efficiency, which is crucial for daily driving and long trips.

The 35-inch tire’s larger diameter and width increase rolling resistance and rotational weight, negatively impacting mileage.

Ride Comfort

The 35×12.50R17’s extra sidewall height and larger air volume provide superior impact absorption for a comfortable off-road ride.

But the 285/75R17 may offer a smoother on-road ride with its shorter sidewall and smaller contact patch.

Tire Size 35x12.50r17 in Metric


The lower-profile 285/75R17 contributes to aerodynamics, while the 35-inch tire has an aggressive, lifted stance. Subjectively, the 35×12.50R17’s taller sidewall suits trucks aesthetically.

Handling & Stability

The 285/75R17’s shorter sidewall enhances responsiveness and handling precision on the pavement. But the 35-inch tire’s extra flex provides stability and traction advantages off-road and on loose surfaces.

Noise & Vibration

The 285/75R17 transmits more road noise and vibration with its stiffer sidewall. The 35-inch tire’s added air volume and flexible sidewall help isolate the cabin from noise and vibrations.

285 75r17 In Inches

Durability & Wear

The 285/75R17 exhibits more even treadwear and potentially longer life. But the larger 35-inch tire withstands off-road impacts better, albeit adding stress to components.

Adverse Conditions

The 285/75R17’s narrower tread effectively cuts through snow, but the 35-inch tire provides better muddy traction with its wider footprint. Both perform well overall.

Speedometer Difference

At an actual speed of 20 mph, the 285/75R17 equipped vehicle’s speedometer reads 20 mph.

But with 35×12.50R17 tires, the speedometer reads 20.71 mph due to the larger diameter. This speedometer difference of 0.71 mph is noticeable but not severe between the sizes.

What Does 35×12 5r17 Tire Mean?

The “35” in the tire size 35×12 50r17 means the tire’s diameter in inches. The “12.50” refers to the section width of the tire inches.

The letter “r” in size means it is a radial tire. And finally, the “17” refers to the wheel or rim diameter that this tire size fits.

What is the Conversion for 285/75r17 Tires?

The numbers 285/75R17 on a tire refer to its size and specifications. Here’s what each of these numbers represents:

  • 285: This number indicates the tire’s width in millimeters. In this case, the tire is 285 millimeters wide.
  • 75: This number represents the aspect ratio of the tire, which is the ratio of the tire’s height to its width. In this case, the height is 75% of the tire’s width.
  • R17: The “R” stands for radial construction, which is the most common type of tire construction. The “17” indicates the diameter of the wheel in inches, so the tire is designed to fit a 17-inch wheel.

285/75R17 vs 35x12.50r17

285/75R17 vs 35×12.50r17

This comparison table will help you to understand the difference between at a glance.

Our Observation
After comparing the 285/75R17 and 35×12.50R17 tire sizes, they are optimized for different purposes. The larger 35×12.50R17 provides increased capability for off-roading with its taller size, added ground clearance, and traction.

However, the smaller 285/75R17 is tailored more for responsive on-road handling and comfort, with its shorter sidewalls and narrower width.

Drivers must weigh their priorities, but the two tires lean towards either off-road adventuring or smooth, precise street performance, respectively.

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