245/45R17 Tire Size Specifications & Compatible Vehicles
Overall Diameter
652.3 mm
Section Width
245 mm
Sidewall Height
110.3 mm
Circumference
2049.3 mm
Revs/Mile
785
Rim Diameter
17"
Inch Equivalent
25.7x9.6R17
Rim Width (ETRTO)
7.0" – 9.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 245/45R17 and may be used as replacements:
Popular Comparisons
See how 245/45R17 compares to other common tire sizes:
Understanding 245/45R17
The tire size 245/45R17 means the tire has a section width of 245mm, an aspect ratio of 45% (the sidewall height is 45% of the width), and fits a 17-inch rim.
Sidewall Height = 245 x 0.45 = 110.3 mm
Overall Diameter = (110.3 x 2) + (17 x 25.4) = 652.3 mm
Circumference = 652.3 x π = 2049.3 mm
Overall Diameter = (110.3 x 2) + (17 x 25.4) = 652.3 mm
Circumference = 652.3 x π = 2049.3 mm
Frequently Asked Questions
The 245/45R17 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 245/45R17 tire has an overall diameter of 652.3mm (25.7 inches). The sidewall height is 110.3mm, and the total circumference is 2049mm.
For 245/45R17 tires, the ETRTO recommended rim width is 8.0". The acceptable range is 7.0" minimum to 9.0" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.
Yes, as long as the replacement tire overall diameter is within 3% of the 245/45R17 652.3mm diameter. Compatible alternatives include 315/35R17, 205/60R16, 195/50R18. Use our Tire Size Calculator to compare any two sizes.