245/70R17 Tire Size Specifications & Compatible Vehicles
Overall Diameter
774.8 mm
Section Width
245 mm
Sidewall Height
171.5 mm
Circumference
2434.1 mm
Revs/Mile
661
Rim Diameter
17"
Inch Equivalent
30.5x9.6R17
Rim Width (ETRTO)
7.0" – 9.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 245/70R17 and may be used as replacements:
Popular Comparisons
See how 245/70R17 compares to other common tire sizes:
Understanding 245/70R17
The tire size 245/70R17 means the tire has a section width of 245mm, an aspect ratio of 70% (the sidewall height is 70% of the width), and fits a 17-inch rim.
Sidewall Height = 245 x 0.7 = 171.5 mm
Overall Diameter = (171.5 x 2) + (17 x 25.4) = 774.8 mm
Circumference = 774.8 x π = 2434.1 mm
Overall Diameter = (171.5 x 2) + (17 x 25.4) = 774.8 mm
Circumference = 774.8 x π = 2434.1 mm
Frequently Asked Questions
The 245/70R17 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 245/70R17 tire has an overall diameter of 774.8mm (30.5 inches). The sidewall height is 171.5mm, and the total circumference is 2434mm.
For 245/70R17 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 245/70R17 774.8mm diameter. Compatible alternatives include 335/55R16, 195/75R19, 225/65R19. Use our Tire Size Calculator to compare any two sizes.