What is the diameter of a P285/50R20 tire?

A P285/50R20 tire has an overall diameter of 31.22 inches (793.0mm).

How many revolutions per mile does a P285/50R20 tire make?

A P285/50R20 tire makes approximately 646 revolutions per mile.

What rim width is recommended for P285/50R20 tires?

The recommended wheel rim width for a P285/50R20 tire is 7.1" - 10".

P285/50R20

Passenger / P-Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The P285/50R20 tire size features an overall diameter of 31.22 inches, a section width of 11.2 inches (285mm), and rotates 646 times per mile. It is a standard factory tire fitment on 10+ vehicle models including Lexus LX 570.

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Physical Dimensions & Specs

Overall Diameter

31.22"

793.0 mm

Section Width

285 mm

11.22" wide

Sidewall Height

5.61"

142.5 mm (50% aspect)

Revolutions / Mile

646

Circumference: 98.08"

Rim Diameter

20"

Wheel size

Recommended Rim Width

7.1" - 10"

Optimal rim width range

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Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare P285/50R20 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)285/50R20

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:31.2"

Sidewall:5.6"

Revs/Mile:646

Tire 2 (New / Compare)245/60R18

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:29.6"

Sidewall:5.8"

Revs/Mile:682

Visual Tire & Wheel Comparison

Speedometer Variance

-5.3%At 60 mph reading, actual speed is 56.8 mph

Indicated	Actual Speed	Diff
20 mph	18.9 mph	-1.1 mph
30 mph	28.4 mph	-1.6 mph
45 mph	42.6 mph	-2.4 mph
60 mph	56.8 mph	-3.2 mph
75 mph	71.0 mph	-4.0 mph
90 mph	85.3 mph	-4.7 mph

Fender & Suspension Clearance

Fitment Status: MODERATE RISK

Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.

Inner Strut Space:7.7mm LESS clearance

Outer Fender Push:Extends 17.7mm further out

Ride Height Delta:-0.82" lower ground clearance

Vehicles That Fit P285/50R20 (10+ Models)

Factory standard and optional vehicle fitments utilizing P285/50R20 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2008	Lexus LX 570	LX 570	View 2008 LX 570 ›
2009	Lexus LX 570	LX 570	View 2009 LX 570 ›
2010	Lexus LX 570	LX 570	View 2010 LX 570 ›
2011	Lexus LX 570	LX 570	View 2011 LX 570 ›
2013	Lexus LX 570	LX 570	View 2013 LX 570 ›
2014	Lexus LX 570	LX 570	View 2014 LX 570 ›
2015	Lexus LX 570	LX 570	View 2015 LX 570 ›
2016	Lexus LX 570	LX 570	View 2016 LX 570 ›
2017	Lexus LX 570	LX 570	View 2017 LX 570 ›
2018	Lexus LX 570	LX 570	View 2018 LX 570 ›