285/35R18 tire size
A 285/35R18 tire stands 25.9 inches tall and 11.2 inches wide, with a 3.9-inch sidewall on an 18-inch rim.
- Overall height
- 25.9 in657 mm
- Section width
- 11.2 in285 mm
- Sidewall height
- 3.9 in100 mm
- Rim diameter
- 18 in457 mm
- Circumference
- 81.2 in2063 mm
- Revolutions per mile
- 780485 per km
- Inch size
- 25.9x11.2R18
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 285/35R18's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 275/35R18, 1.1% shorter (0.28 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 rims, these are the closest matches to a 285/35R18.
Other 18-inch sizes near 285/35R18
285 mm wide, other sidewalls
35 series, other widths
See the other sizes for this rim on 18-inch tire sizes.
Shop 285/35R18 tires
These open each store's own list of 285/35R18 tires, where you can filter by type, load and speed rating.
285/35R18 questions
How tall is a 285/35R18 tire?
About 25.9 inches (657 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.
What does 285/35R18 mean?
285 is the section width in millimetres (11.2 in). 35 means the sidewall is 35% of that width: 100 mm, or 3.9 in. R means radial construction, and 18 is the rim diameter in inches.
Can I use 275/35R18 instead of 285/35R18?
275/35R18 is 1.1% shorter (0.28 in) and 10 mm narrower, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 59.4 mph.
What is 285/35R18 in inches?
In inch terms it is 25.9x11.2R18: 25.9 inches tall, 11.2 inches wide, for an 18-inch rim.
How many revolutions per mile does a 285/35R18 make?
About 780 turns per mile, worked out from its unloaded circumference of 81.2 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.