245/65R17 Tire Size

All You Need to Know About 245/65R17 Tires

In the 245/65R17 tire size designation, 245 refers to section width in millimeters, 65 is the aspect ratio, and 17 is the rim diameter in inches. This configuration results in an overall diameter of approximately 29.5 inches and fits within an approved 7.0–8.5 inch rim width range, placing it at the upper end of the mid-size SUV category.

245/65R17 size is typically offered with load indexes ranging from 107 to 114 (approximately 2,150–2,600 lbs per tire), covering a range of mid-size SUV and light truck applications where higher load capacity is required.

245/65R17 Size Quick Specs

• Overall diameter: ≈29.5 in
• Sidewall height: ≈159 mm
• Section width: 245 mm
• Rim width range: 7.0–8.5 in
• Wheel diameter: 17 in

Note: The calculated overall diameter of 245/65R17 is ≈29.5 inches. Actual mounted diameter varies by manufacturer and tread design - typically within ±0.1–0.3 inches of that figure.

Common Vehicle Fitments for 245/65R17

245/65R17 is used on mid-size SUVs and body-on-frame platforms with 17-inch wheels, with documented applications, including:

• Acura SLX
• Buick Rainier
• Chevrolet TrailBlazer
• GMC Envoy
• Isuzu Ascender
• Saab 9-7X 

Additional 245/65R17 appearances on other vehicle models are trim- and market-specific rather than standard across the full model line, so fitment should always be verified against the vehicle placard.

245/65R17 Dimensions in Inches

A 245/65R17 tire is about 29.54 inches tall, 9.65 inches wide, and has a sidewall height of 6.27 inches, based on its calculated dimensions.

245/65R17 in inches: All Measurements

• Overall diameter: ≈29.5″
• Sidewall height: ≈6.27″
• Section width: ≈9.65″
• Circumference: ≈92.6″

245/65R17 in inches is equivalent to: 29.5″ × 9.6″ R17

Most Recommended 245/65R17 Tires

Best tires in 245/65R17 size include:

• All season 245 65r17 tires: Continental TerrainContact H/T, Kumho Crugen HT51
• All terrain 245 65r17 tires: Nitto Ridge Grappler, Continental TerrainContact A/T
• 245/65R17 cheap tires: Ironman Radial A/P, GT Radial Adventuro AT3

Comparison of 245/65R17 With Similar Tire Sizes

245/65R17 sits between 235/65R17 and 265/70R17 in width and diameter. The comparisons below show what each step means for fitment.

Difference Between 245/65R17 and 235/65R17 Tire Sizes

The 245/65R17 is 10 mm wider than the 235/65R17. Because both share a 65% aspect ratio, the wider section also produces a proportionally taller sidewall and larger overall diameter:

• Width: 245/65R17 is 10 mm wider than 235/65R17
• Overall diameter: 245/65R17 is ≈0.51 inches (≈1.8%) larger than 235/65R17

The difference in OD between 245/65R17 and 235/65R17 remains within the ±3% threshold, so these sizes are generally interchangeable if rim width, load index, and clearance requirements are met.

Difference Between 245/65R17 and 265/70R17 Tire Sizes

The 265/70R17 is wider and significantly taller than the 245/65R17:

• Width: 265/70R17 is 20 mm wider than 245/65R17
• Overall diameter: 265/70R17 is ≈2.10 inches (≈7.1%) larger than 245/65R17

The difference in OD between 265/70R17 and 245/65R17 is much over the ±3% threshold, so these sizes are not directly interchangeable without verifying clearance, gearing impact, and vehicle modifications.