Shop LT245/65R17 Tires

All You Need To Know About LT245/65R17 Tire Size

LT245/65R17 has a 245 mm section width, a 65% aspect ratio, fits a 17-inch wheel, and has a calculated overall diameter of approximately 29.5 inches with a sidewall approximately 6.3 inches high. The LT prefix identifies LT245/65R17 as an LT-metric Light Truck tire size. A verified 245/65R17 version also exists with the same nominal dimensions, but the different designation means load and inflation requirements must be checked rather than assuming the two versions are automatically interchangeable.

LT245/65R17 Size Quick Specs

LT245/65R17 Dimensions in Inches

The LT245/65R17 tire size is approximately 9.6 inches wide, 29.5 inches tall overall, with a sidewall approximately 6.3 inches high. For LT245/65R17, the 17-inch figure means the tire is designed for a 17-inch wheel, while the overall diameter shows approximately how tall the complete tire is.

LT245/65R17 in Inches: All Measurements

• Overall Diameter: Approx. 29.5 inches
• Sidewall Height: Approx. 6.3 inches
• Section Width: Approx. 9.6 inches
• Circumference: Approx. 92.8 inches
• Rim Diameter: 17 inches

LT245/65R17 Alternative Tire Sizes

Among the alternative-size comparisons researched for LT245/65R17, LT225/65R17 and LT245/70R17 are the two addressed below. LT225/65R17 is narrower and shorter than LT245/65R17, while LT245/70R17 keeps the same nominal width but has a taller sidewall and overall diameter. Both fall outside the commonly used ±3% overall-diameter guideline, so neither should be treated as a normal direct size swap. The ±3% tire-size guideline helps explain why the detailed differences matter.

LT245/65R17 vs LT225/65R17

LT225/65R17 has a 3.47% smaller calculated overall diameter than LT245/65R17, placing the difference outside the ±3% guideline.

• Width Difference: LT225/65R17 is 20 mm narrower than LT245/65R17.
• Diameter Difference: LT225/65R17 is approximately 1.0 inch smaller in overall diameter than LT245/65R17, a 3.47% difference.
• Interchangeability: LT225/65R17 falls outside the commonly used ±3% diameter guideline compared with LT245/65R17 and is generally not recommended as a direct size swap. A diameter change of this size can affect speedometer accuracy, vehicle clearance, and vehicle systems calibrated around the original tire diameter.
• Practical Difference: Compared with LT245/65R17, LT225/65R17 is narrower and has a shorter sidewall, producing a smaller overall tire diameter.

LT245/65R17 vs LT245/70R17

LT245/70R17 has a 3.27% larger calculated overall diameter than LT245/65R17, placing the difference outside the ±3% guideline.

• Width Difference: LT245/70R17 and LT245/65R17 have the same nominal 245 mm section width.
• Diameter Difference: LT245/70R17 is approximately 1.0 inch larger in overall diameter than LT245/65R17, a 3.27% difference.
• Interchangeability: LT245/70R17 falls outside the commonly used ±3% diameter guideline compared with LT245/65R17 and is generally not recommended as a direct size swap. A diameter change of this size can affect speedometer accuracy, vehicle clearance, and vehicle systems calibrated around the original tire diameter.
• Practical Difference: LT245/70R17 keeps the same nominal width as LT245/65R17 but uses a taller sidewall, making the complete tire approximately one inch taller overall.

LT245/65R17 Direct Swap Alternatives

The LT255/65R17 is the best direct swap for an LT245/65R17, offering a 10 mm wider footprint with a safe 1.7% height increase. For near-identical diameter, the LT265/60R17 is recommended, while the LT245/70R17 provides increased ground clearance for off-road use. All alternatives must maintain the Light Truck (LT) classification to preserve necessary towing and payload capacities.