305/30R22 Tire Size Specifications & Compatible Vehicles
Overall Diameter
741.8 mm
Section Width
305 mm
Sidewall Height
91.5 mm
Circumference
2330.4 mm
Revs/Mile
691
Rim Diameter
22"
Inch Equivalent
29.2x12R22
Rim Width (ETRTO)
9.5" – 12.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 305/30R22 and may be used as replacements:
Understanding 305/30R22
The tire size 305/30R22 means the tire has a section width of 305mm, an aspect ratio of 30% (the sidewall height is 30% of the width), and fits a 22-inch rim.
Sidewall Height = 305 x 0.3 = 91.5 mm
Overall Diameter = (91.5 x 2) + (22 x 25.4) = 741.8 mm
Circumference = 741.8 x π = 2330.4 mm
Overall Diameter = (91.5 x 2) + (22 x 25.4) = 741.8 mm
Circumference = 741.8 x π = 2330.4 mm
Frequently Asked Questions
The 305/30R22 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 305/30R22 tire has an overall diameter of 741.8mm (29.2 inches). The sidewall height is 91.5mm, and the total circumference is 2330mm.
For 305/30R22 tires, the ETRTO recommended rim width is 10.5". The acceptable range is 9.5" minimum to 12.0" 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 305/30R22 741.8mm diameter. Compatible alternatives include 195/60R20, 335/35R20, 235/50R20. Use our Tire Size Calculator to compare any two sizes.