235/40R16 Tire Size Specifications & Compatible Vehicles
Overall Diameter
594.4 mm
Section Width
235 mm
Sidewall Height
94.0 mm
Circumference
1867.4 mm
Revs/Mile
862
Rim Diameter
16"
Inch Equivalent
23.4x9.3R16
Rim Width (ETRTO)
7.0" – 9.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 235/40R16 and may be used as replacements:
Understanding 235/40R16
The tire size 235/40R16 means the tire has a section width of 235mm, an aspect ratio of 40% (the sidewall height is 40% of the width), and fits a 16-inch rim.
Sidewall Height = 235 x 0.4 = 94.0 mm
Overall Diameter = (94.0 x 2) + (16 x 25.4) = 594.4 mm
Circumference = 594.4 x π = 1867.4 mm
Overall Diameter = (94.0 x 2) + (16 x 25.4) = 594.4 mm
Circumference = 594.4 x π = 1867.4 mm
Frequently Asked Questions
The 235/40R16 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 235/40R16 tire has an overall diameter of 594.4mm (23.4 inches). The sidewall height is 94.0mm, and the total circumference is 1867mm.
For 235/40R16 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 235/40R16 594.4mm diameter. Compatible alternatives include 305/35R15, 325/25R17, 265/45R14. Use our Tire Size Calculator to compare any two sizes.