275/70R18 tire size
A 275/70R18 tire stands 33.2 inches tall and 10.8 inches wide, with a 7.6-inch sidewall on an 18-inch rim.
- Overall height
- 33.2 in842 mm
- Section width
- 10.8 in275 mm
- Sidewall height
- 7.6 in193 mm
- Rim diameter
- 18 in457 mm
- Circumference
- 104.2 in2646 mm
- Revolutions per mile
- 608378 per km
- Inch size
- 33.2x10.8R18
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 275/70R18's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 295/65R18, 0.2% shorter (0.06 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 275/70R18.
275/70R18 compared
LT275/70R18
LT275/70R18 is the light-truck version of this size, with the same nominal height and width: 33.2 by 10.8 inches. LT tires have stiffer construction for heavier loads and towing, run at higher pressures and carry a load range (C, D, E or F) instead of a passenger load rating. Fit LT tires where the door placard calls for them or the truck works hard; on a light-duty vehicle they ride firmer than the P-metric size.
Other 18-inch sizes near 275/70R18
275 mm wide, other sidewalls
70 series, other widths
See the other sizes for this rim on 18-inch tire sizes, or other tires about this tall on 33-inch tires.
Shop 275/70R18 tires
These open each store's own list of 275/70R18 tires, where you can filter by type, load and speed rating.
275/70R18 questions
How tall is a 275/70R18 tire?
About 33.2 inches (842 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.
What does 275/70R18 mean?
275 is the section width in millimetres (10.8 in). 70 means the sidewall is 70% of that width: 193 mm, or 7.6 in. R means radial construction, and 18 is the rim diameter in inches.
Is LT275/70R18 the same size as 275/70R18?
Yes, they share the same nominal size: 33.2 inches tall and 10.8 inches wide. The difference is construction. LT tires are built for heavier loads at higher pressures and carry a load range letter (C, D, E or F); they ride firmer than passenger tires.
Can I use 295/65R18 instead of 275/70R18?
295/65R18 is 0.2% shorter (0.06 in) and 20 mm wider, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 59.9 mph. Make sure the extra width clears the suspension and fender liner at full lock.
What is 275/70R18 in inches?
In inch terms it is 33.2x10.8R18: 33.2 inches tall, 10.8 inches wide, for an 18-inch rim.
How many revolutions per mile does a 275/70R18 make?
About 608 turns per mile, worked out from its unloaded circumference of 104.2 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.