285/75R20 tire size
A 285/75R20 tire stands 36.8 inches tall and 11.2 inches wide, with a 8.4-inch sidewall on a 20-inch rim.
- Overall height
- 36.8 in936 mm
- Section width
- 11.2 in285 mm
- Sidewall height
- 8.4 in214 mm
- Rim diameter
- 20 in508 mm
- Circumference
- 115.7 in2939 mm
- Revolutions per mile
- 548340 per km
- Inch size
- 36.8x11.2R20
Compare it with any other size in the tire size calculator.
Sizes you can swap to
These 20-inch sizes are within two width steps and 3% of a 285/75R20's overall height, the usual limit before the speedometer, ABS and transmission notice. The closest is 305/70R20, 0.1% shorter (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 18-inch or 19-inch or 22-inch rims, these are the closest matches to a 285/75R20.
Other 20-inch sizes near 285/75R20
285 mm wide, other sidewalls
- 285/35R2027.9″
- 285/40R2029.0″
- 285/45R2030.1″
- 285/50R2031.2″
- 285/55R2032.3″
- 285/60R2033.5″
- 285/65R2034.6″
- 285/70R2035.7″
75 series, other widths
See the other sizes for this rim on 20-inch tire sizes, or other tires about this tall on 37-inch tires.
Shop 285/75R20 tires
These open each store's own list of 285/75R20 tires, where you can filter by type, load and speed rating.
285/75R20 questions
How tall is a 285/75R20 tire?
About 36.8 inches (936 mm) from the ground to the top of the tread, unloaded. On the vehicle, carrying weight, it sits a little lower.
What does 285/75R20 mean?
285 is the section width in millimetres (11.2 in). 75 means the sidewall is 75% of that width: 214 mm, or 8.4 in. R means radial construction, and 20 is the rim diameter in inches.
Can I use 295/70R20 instead of 285/75R20?
295/70R20 is 1.5% shorter (0.57 in) and 10 mm wider, which is inside the usual 3% rule. With it fitted, the speedometer shows 60 mph when you are doing 59.1 mph. Make sure the extra width clears the suspension and fender liner at full lock.
What is 285/75R20 in inches?
In inch terms it is 36.8x11.2R20: 36.8 inches tall, 11.2 inches wide, for a 20-inch rim.
How many revolutions per mile does a 285/75R20 make?
About 548 turns per mile, worked out from its unloaded circumference of 115.7 inches. Makers list slightly higher numbers for their own tires, because a loaded tire rolls on a smaller radius.