235/45R17 Tire Size Specifications & Compatible Vehicles
Overall Diameter
643.3 mm
Section Width
235 mm
Sidewall Height
105.8 mm
Circumference
2021.0 mm
Revs/Mile
796
Rim Diameter
17"
Inch Equivalent
25.3x9.3R17
Rim Width (ETRTO)
7.0" – 9.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 235/45R17 and may be used as replacements:
Popular Comparisons
See how 235/45R17 compares to other common tire sizes:
Understanding 235/45R17
The tire size 235/45R17 means the tire has a section width of 235mm, an aspect ratio of 45% (the sidewall height is 45% of the width), and fits a 17-inch rim.
Sidewall Height = 235 x 0.45 = 105.8 mm
Overall Diameter = (105.8 x 2) + (17 x 25.4) = 643.3 mm
Circumference = 643.3 x π = 2021.0 mm
Overall Diameter = (105.8 x 2) + (17 x 25.4) = 643.3 mm
Circumference = 643.3 x π = 2021.0 mm
Frequently Asked Questions
The 235/45R17 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 235/45R17 tire has an overall diameter of 643.3mm (25.3 inches). The sidewall height is 105.8mm, and the total circumference is 2021mm.
For 235/45R17 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 235/45R17 643.3mm diameter. Compatible alternatives include 155/60R18, 175/75R15, 215/55R16. Use our Tire Size Calculator to compare any two sizes.