275/75R18 tire size
A 275/75R18 tire stands 34.2 inches tall and 10.8 inches wide, with a 8.1-inch sidewall on an 18-inch rim.
- Overall height
- 34.2 in870 mm
- Section width
- 10.8 in275 mm
- Sidewall height
- 8.1 in206 mm
- Rim diameter
- 18 in457 mm
- Circumference
- 107.6 in2732 mm
- Revolutions per mile
- 589366 per km
- Inch size
- 34.2x10.8R18
Compare it with any other size in the tire size calculator.
Sizes you can swap to
These 18-inch sizes are within two width steps and 3% of a 275/75R18's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 295/70R18, 0.1% taller (0.02 in). Wider sizes also need room in the wheel well and a rim width that suits them.
Plus and minus sizes
Changing rim size means changing the sidewall to keep the same overall height. On 16-inch or 17-inch or 19-inch or 20-inch rims, these are the closest matches to a 275/75R18.
Other 18-inch sizes near 275/75R18
275 mm wide, other sidewalls
75 series, other widths
See the other sizes for this rim on 18-inch tire sizes.
Shop 275/75R18 tires
These open each store's own list of 275/75R18 tires, where you can filter by type, load and speed rating.
275/75R18 questions
How tall is a 275/75R18 tire?
About 34.2 inches (870 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.
What does 275/75R18 mean?
275 is the section width in millimetres (10.8 in). 75 means the sidewall is 75% of that width: 206 mm, or 8.1 in. R means radial construction, and 18 is the rim diameter in inches.
Can I use 295/70R18 instead of 275/75R18?
295/70R18 is 0.1% taller (0.02 in) and 20 mm wider, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 60.0 mph. Make sure the extra width clears the suspension and fender liner at full lock.
What is 275/75R18 in inches?
In inch terms it is 34.2x10.8R18: 34.2 inches tall, 10.8 inches wide, for an 18-inch rim.
How many revolutions per mile does a 275/75R18 make?
About 589 turns per mile, worked out from its unloaded circumference of 107.6 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.