245/75R17 Tire Size

All You Need to Know About 245/75R17 Tires

245/75R17 tires are 245 mm wide, with a 75% aspect ratio and a 17-inch wheel diameter, resulting in an overall diameter of 31.5 inches and a sidewall height of ≈7.2".

This page focuses on the dimensional behavior of 245/75R17 and how its geometry affects clearance, ride height, and drivetrain interaction. For load-rated truck applications, see LT245/75R17  or LT24575R17C tires. While dimensions remain constant across the three size versions, load capacity and pressure limits vary depending on construction and must match vehicle requirements.

With a sidewall exceeding 7 inches, the 245/75R17 size operates in a height range where tire deflection, load distribution, and vertical compliance become more pronounced than in lower-profile 17-inch configurations.

245/75R17 Size Quick Specifications

• Approved rim width range: 6.5–8.0"
• Section width: 245 mm
• Sidewall height: 183.75 mm
• Total heigth: ≈31.5"
• Wheel diameter: 17"

Note: The calculated diameter is ≈31.5 inches. Real-world diameter can shift slightly from one manufacturer to another based on how the tire is built and how deep the tread runs.

What Vehicles Use 245/75R17 Tires

245/75R17 is a common fitment on midsize trucks and body-on-frame SUVs where ground clearance, load stability, and ride compliance are all active requirements. Vehicle examples compatible with 245/75R17 include: 

• Jeep: Wrangler (2007-2026) Sport, Sport S, and 75th Anniversary editions.; Gladiator (2019-2026) Sport, Sport S, and Launch Edition.
• Ford: F-150 (XL, XLT, Lariat); F-250/F-350 Super Duty (XL, XLT, Lariat, King Ranch).
• Chevrolet & GMC: Silverado 2500 HD (WT, LT, Custom); Sierra 2500 HD (WT, SLE, SLT, Denali, AT4).
• Nissan: NV3500 (S, SL, SV), Titan XD (S, SV, Pro-4X)

Because of its ≈31.5-inch diameter, the 245/75R17 fitment must be evaluated at full steering lock and suspension compression, not only static clearance.

245/75R17 Dimensions in Inches

The 245/75R17 measures ≈9.7 inches in width, 31.5 inches in diameter, and 7.2 inches in sidewall height.

The tall sidewall increases deformation under load, which affects braking stability, cornering response, and tread contact behavior. At the same time, it improves impact absorption and off-road compliance compared to shorter sidewall sizes.

245/75R17 in Inches: Full Measurement Set

• Overall diameter: ≈31.5"
• Width: ≈9.7"
• Sidewall height: ≈7.2"
• Wheel diameter: 17"
• Circumference: ≈98.9"

Comparison of 245/75R17 With Similar Tire Sizes

Within the 17-inch truck category, 245/75R17 sits among the taller narrow-section configurations where sidewall height and rolling diameter carry real consequences for gearing, clearance, and load behavior. The closest reference points are 245/70R17, 265/70R17, and 255/75R17.

245/75R17 vs 245/70R17

• Width: identical at 245 mm
• Overall diameter: 245/75R17 is ≈0.96" (≈3.1%) larger

This slightly exceeds the ±3% threshold, meaning 245/75R17 vs 245/70R17 sizes are not direct replacements. The additional diameter raises effective ride height, lowers rotational frequency, and causes the speedometer to under-read - effects that become more relevant on vehicles where towing calibration and gear ratio behavior are part of the equation.

245/75R17 vs 265/70R17

• Width: 265/70R17 is 20 mm wider
• Overall diameter: 245/75R17 is ≈0.14" (≈0.4%) larger

The diameter difference between 245/75R17 and 265/70R17 is negligible, and well within the ±3% range, so drivetrain calibration is largely unaffected. The meaningful change is section width - 20 mm of added width increases the contact patch and changes how the tire sits within the wheel well, requiring inner fender and suspension clearance checks before substitution.

245/75R17 vs 255/75R17

• Width: 255/75R17 is 10 mm wider
• Overall diameter: 255/75R17 is ≈0.59" (≈1.9%) larger

Diameter differences between 245/75R17 and 255/75R17 stay within the ±3% range, so the speedometer impact and gearing effect remain minor. The practical consideration here is the wider footprint - 255/75R17 increases lateral load spread and may require verification of wheel width compatibility and clearance at full steering lock.