Shop LT315/70R17 Tires

All You Need To Know About LT315/70R17 Tire Size

LT315/70R17 has a 315 mm section width, a 70% aspect ratio, fits a 17-inch wheel, measures approximately 34.4 inches in overall diameter, and has a sidewall approximately 8.7 inches high. LT315/70R17 is approximately 12.4 inches wide. The R in LT315/70R17 identifies radial construction, while 17 specifies the required wheel diameter.

LT315/70R17 Size Quick Specs

What Vehicles Use LT315/70R17 Tires?

LT315/70R17 is documented as a factory tire size for specific configurations of the Ford models listed below.

• Ford Bronco with the Sasquatch Package
• Ford F-150 Raptor

To check whether the LT315/70R17 tire size is a factory fitment for your specific vehicle, use our VIN lookup tool.

LT315/70R17 Dimensions in Inches

The LT315/70R17 tire size is approximately 12.4 inches wide, 34.4 inches tall overall, with a sidewall approximately 8.7 inches high. The 17-inch designation means LT315/70R17 is designed for a wheel with a 17-inch diameter.

LT315/70R17 Tire Size Measurements

• Section Width: Approx. 12.4 inches
• Sidewall Height: Approx. 8.7 inches
• Overall Diameter: Approx. 34.4 inches
• Circumference: Approx. 108.0 inches
• Wheel Diameter: 17 inches

LT315/70R17 Alternative Tire Sizes

Drivers comparing LT315/70R17 alternatives frequently consider 35X12.50R17LT and LT285/75R17. The 35X12.50R17LT is nominally slightly wider and taller than LT315/70R17 because it uses a flotation designation rather than an LT-metric designation. LT285/75R17 is narrower and slightly shorter than LT315/70R17, remaining within the applicable ±5% LT guideline. These results leave room for interchange, but dimensional comparison alone does not establish compatibility under the applicable diameter guidelines.

LT315/70R17 vs 35X12.50R17LT

35X12.50R17LT has an overall diameter approximately 1.86% larger than LT315/70R17, which is within the ±5% guideline for ligt trucks:

• Width Difference: 35X12.50R17LT is nominally approximately 0.1 inch, or 2.5 mm, wider than LT315/70R17.
• Diameter Difference: 35X12.50R17LT is approximately 0.6 inch taller in overall diameter than LT315/70R17, a difference of 1.86%.
• Interchangeability: The diameter difference between 35X12.50R17LT and LT315/70R17 falls within the commonly used ±5% guideline, but that result alone does not confirm interchangeability. Wheel width, load capacity, inflation requirements, radial and lateral clearance, and vehicle requirements must still be checked.
• Practical Difference: 35X12.50R17LT provides a slightly larger nominal overall diameter and section width than LT315/70R17 while retaining the same 17-inch wheel diameter.

LT315/70R17 vs LT285/75R17

LT285/75R17 has an overall diameter approximately 1.55% smaller than LT315/70R17, which is within the applicable ±5% LT diameter guideline.

• Width Difference: LT285/75R17 is 30 mm, or approximately 1.2 inches, narrower than LT315/70R17.
• Diameter Difference: LT285/75R17 is approximately 0.5 inch shorter in overall diameter than LT315/70R17, a difference of 1.55%.
• Interchangeability: The overall-diameter difference between LT285/75R17 and LT315/70R17 falls within the applicable ±5% guideline for LT tire-size comparisons and leaves room for interchange. The percentage alone does not confirm complete vehicle compatibility; approved wheel-width compatibility, load capacity and load range, required inflation pressure, radial and lateral clearance, speedometer and odometer effects, gearing and drivetrain requirements, and vehicle-specific tire requirements must still be verified.
• Practical Difference: LT285/75R17 is considerably narrower and slightly shorter overall than LT315/70R17, while both sizes fit 17-inch wheels.