What is the diameter of a 255/55R20 tire?

A 255/55R20 tire has an overall diameter of 31.04 inches (788.4mm).

How many revolutions per mile does a 255/55R20 tire make?

A 255/55R20 tire makes approximately 650 revolutions per mile.

What rim width is recommended for 255/55R20 tires?

The recommended wheel rim width for a 255/55R20 tire is 6.4" - 8.9".

255/55R20

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 255/55R20 tire size features an overall diameter of 31.04 inches, a section width of 10.0 inches (255mm), and rotates 650 times per mile. It is a standard factory tire fitment on 150+ vehicle models including Buick Enclave.

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Physical Dimensions & Specs

Overall Diameter

31.04"

788.4 mm

Section Width

255 mm

10.04" wide

Sidewall Height

5.52"

140.2 mm (55% aspect)

Revolutions / Mile

650

Circumference: 97.53"

Rim Diameter

20"

Wheel size

Recommended Rim Width

6.4" - 8.9"

Optimal rim width range

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 255/55R20 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)255/55R20

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:31.0"

Sidewall:5.5"

Revs/Mile:650

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

-4.7%At 60 mph reading, actual speed is 57.2 mph

Indicated	Actual Speed	Diff
20 mph	19.1 mph	-0.9 mph
30 mph	28.6 mph	-1.4 mph
45 mph	42.9 mph	-2.1 mph
60 mph	57.2 mph	-2.8 mph
75 mph	71.5 mph	-3.5 mph
90 mph	85.7 mph	-4.3 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:-0.73" lower ground clearance

Vehicles That Fit 255/55R20 (150+ Models)

Factory standard and optional vehicle fitments utilizing 255/55R20 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2018	Buick Enclave	Avenir, AWD	View 2018 Enclave ›
2018	Buick Enclave	Avenir, FWD	View 2018 Enclave ›
2019	Buick Enclave	Avenir, FWD	View 2019 Enclave ›
2019	Buick Enclave	Avenir, AWD	View 2019 Enclave ›
2020	Buick Enclave	Avenir, AWD	View 2020 Enclave ›
2020	Buick Enclave	Avenir, FWD	View 2020 Enclave ›
2021	Buick Enclave	Avenir, AWD	View 2021 Enclave ›
2021	Buick Enclave	Avenir, FWD	View 2021 Enclave ›
2021	Buick Enclave	Essence, AWD	View 2021 Enclave ›
2021	Buick Enclave	Essence, FWD	View 2021 Enclave ›
2022	Buick Enclave	Avenir, AWD	View 2022 Enclave ›
2022	Buick Enclave	Avenir, FWD	View 2022 Enclave ›
2022	Buick Enclave	Essence, AWD	View 2022 Enclave ›
2022	Buick Enclave	Essence, FWD	View 2022 Enclave ›
2023	Buick Enclave	Avenir, AWD	View 2023 Enclave ›
2023	Buick Enclave	Avenir, FWD	View 2023 Enclave ›
2023	Buick Enclave	Essence, AWD	View 2023 Enclave ›
2023	Buick Enclave	Essence, FWD	View 2023 Enclave ›
2024	Buick Enclave	Avenir, AWD	View 2024 Enclave ›
2024	Buick Enclave	Essence, AWD	View 2024 Enclave ›
2024	Buick Enclave	Essence, FWD	View 2024 Enclave ›
2024	Buick Enclave	Avenir, FWD	View 2024 Enclave ›
2025	Buick Enclave	Preferred, AWD	View 2025 Enclave ›
2025	Buick Enclave	Sport Touring, FWD	View 2025 Enclave ›
2025	Buick Enclave	Preferred, FWD	View 2025 Enclave ›
2025	Buick Enclave	Sport Touring, AWD	View 2025 Enclave ›
2018	Chevrolet Traverse	High Country	View 2018 Traverse ›
2018	Chevrolet Traverse	Premier, 4WD	View 2018 Traverse ›
2018	Chevrolet Traverse	RS	View 2018 Traverse ›
2018	Chevrolet Traverse	Premier, FWD	View 2018 Traverse ›
2019	Chevrolet Traverse	High Country, 4WD	View 2019 Traverse ›
2019	Chevrolet Traverse	High Country, FWD	View 2019 Traverse ›
2019	Chevrolet Traverse	Premier, 4WD	View 2019 Traverse ›
2019	Chevrolet Traverse	RS, 2.0L Eng VIN X	View 2019 Traverse ›
2019	Chevrolet Traverse	Premier, FWD	View 2019 Traverse ›
2019	Chevrolet Traverse	RS, 3.6L Eng VIN W, 4WD	View 2019 Traverse ›
2019	Chevrolet Traverse	RS, 3.6L Eng VIN W, FWD	View 2019 Traverse ›
2020	Chevrolet Traverse	High Country, 4WD	View 2020 Traverse ›
2020	Chevrolet Traverse	High Country, FWD	View 2020 Traverse ›
2020	Chevrolet Traverse	Premier, 4WD	View 2020 Traverse ›
2020	Chevrolet Traverse	Premier, FWD	View 2020 Traverse ›
2020	Chevrolet Traverse	RS, 4WD	View 2020 Traverse ›
2020	Chevrolet Traverse	RS, FWD	View 2020 Traverse ›
2021	Chevrolet Traverse	High Country, 4WD	View 2021 Traverse ›
2021	Chevrolet Traverse	High Country, FWD	View 2021 Traverse ›
2021	Chevrolet Traverse	Premier, 4WD	View 2021 Traverse ›
2021	Chevrolet Traverse	Premier, FWD	View 2021 Traverse ›
2021	Chevrolet Traverse	RS, 4WD	View 2021 Traverse ›
2021	Chevrolet Traverse	RS, FWD	View 2021 Traverse ›
2022	Chevrolet Traverse	High Country, 4WD	View 2022 Traverse ›
2022	Chevrolet Traverse	High Country, FWD	View 2022 Traverse ›
2022	Chevrolet Traverse	Premier, 4WD	View 2022 Traverse ›
2022	Chevrolet Traverse	Premier, FWD	View 2022 Traverse ›
2022	Chevrolet Traverse	RS, 4WD	View 2022 Traverse ›
2022	Chevrolet Traverse	RS, FWD	View 2022 Traverse ›
2023	Chevrolet Traverse	High Country, 4WD	View 2023 Traverse ›
2023	Chevrolet Traverse	High Country, FWD	View 2023 Traverse ›
2023	Chevrolet Traverse	Premier, 4WD	View 2023 Traverse ›
2023	Chevrolet Traverse	Premier, FWD	View 2023 Traverse ›
2023	Chevrolet Traverse	RS, 4WD	View 2023 Traverse ›
2023	Chevrolet Traverse	RS, FWD	View 2023 Traverse ›
2024	Chevrolet Traverse	LS, 4WD	View 2024 Traverse ›
2024	Chevrolet Traverse	LS, FWD	View 2024 Traverse ›
2024	Chevrolet Traverse	LT, 4WD	View 2024 Traverse ›
2024	Chevrolet Traverse	LT, FWD	View 2024 Traverse ›
2024	Chevrolet Traverse Limited	High Country, 4WD	View 2024 Traverse Limited ›
2024	Chevrolet Traverse Limited	High Country, FWD	View 2024 Traverse Limited ›
2024	Chevrolet Traverse Limited	Premier, 4WD	View 2024 Traverse Limited ›
2024	Chevrolet Traverse Limited	Premier, FWD	View 2024 Traverse Limited ›
2024	Chevrolet Traverse Limited	RS, 4WD	View 2024 Traverse Limited ›
2024	Chevrolet Traverse Limited	RS, FWD	View 2024 Traverse Limited ›
2020	Ford Explorer	Limited Hybrid, 4WD	View 2020 Explorer ›
2020	Ford Explorer	Limited, 4WD	View 2020 Explorer ›
2020	Ford Explorer	Limited Hybrid, RWD	View 2020 Explorer ›
2020	Ford Explorer	Limited, RWD	View 2020 Explorer ›
2020	Ford Explorer	Platinum	View 2020 Explorer ›
2020	Ford Explorer	ST	View 2020 Explorer ›
2021	Ford Explorer	King Ranch, 4WD	View 2021 Explorer ›
2021	Ford Explorer	King Ranch, RWD	View 2021 Explorer ›
2021	Ford Explorer	Limited Hybrid, 4WD	View 2021 Explorer ›
2021	Ford Explorer	Limited Hybrid, RWD	View 2021 Explorer ›
2021	Ford Explorer	Limited, 4WD	View 2021 Explorer ›
2021	Ford Explorer	Limited, RWD	View 2021 Explorer ›
2021	Ford Explorer	ST	View 2021 Explorer ›
2022	Ford Explorer	King Ranch, 4WD	View 2022 Explorer ›
2022	Ford Explorer	King Ranch, RWD	View 2022 Explorer ›
2022	Ford Explorer	Limited Hybrid, 4WD	View 2022 Explorer ›
2022	Ford Explorer	Limited Hybrid, RWD	View 2022 Explorer ›
2022	Ford Explorer	Limited, 4WD	View 2022 Explorer ›
2022	Ford Explorer	Limited, RWD	View 2022 Explorer ›
2022	Ford Explorer	ST, 4WD	View 2022 Explorer ›
2022	Ford Explorer	ST, RWD	View 2022 Explorer ›
2022	Ford Explorer	ST-Line, 4WD	View 2022 Explorer ›
2022	Ford Explorer	ST-Line, RWD	View 2022 Explorer ›
2023	Ford Explorer	Limited Hybrid, 4WD	View 2023 Explorer ›
2023	Ford Explorer	King Ranch, 4WD	View 2023 Explorer ›
2023	Ford Explorer	King Ranch, RWD	View 2023 Explorer ›
2023	Ford Explorer	Limited Hybrid, RWD	View 2023 Explorer ›
2023	Ford Explorer	Limited, 4WD	View 2023 Explorer ›
2023	Ford Explorer	ST-Line, 4WD	View 2023 Explorer ›
2023	Ford Explorer	ST, RWD	View 2023 Explorer ›
2023	Ford Explorer	Limited, RWD	View 2023 Explorer ›
2023	Ford Explorer	ST, 4WD	View 2023 Explorer ›
2023	Ford Explorer	ST-Line, RWD	View 2023 Explorer ›
2024	Ford Explorer	King Ranch, 4WD	View 2024 Explorer ›
2024	Ford Explorer	Limited, 4WD	View 2024 Explorer ›
2024	Ford Explorer	King Ranch, RWD	View 2024 Explorer ›
2024	Ford Explorer	Limited, RWD	View 2024 Explorer ›
2024	Ford Explorer	ST, 4WD	View 2024 Explorer ›
2024	Ford Explorer	XLT, RWD	View 2024 Explorer ›
2024	Ford Explorer	XLT, 4WD	View 2024 Explorer ›
2024	Ford Explorer	ST-Line, RWD	View 2024 Explorer ›
2024	Ford Explorer	ST-Line, 4WD	View 2024 Explorer ›
2024	Ford Explorer	ST, RWD	View 2024 Explorer ›
2025	Ford Explorer	Platinum, 2.3L Eng VIN H, 4WD	View 2025 Explorer ›
2025	Ford Explorer	Platinum, 2.3L Eng VIN H, RWD	View 2025 Explorer ›
2025	Ford Explorer	Platinum, 3.0L Eng VIN C, 4WD	View 2025 Explorer ›
2025	Ford Explorer	Platinum, 3.0L Eng VIN C, RWD	View 2025 Explorer ›
2025	Ford Explorer	ST-Line, 4WD	View 2025 Explorer ›
2025	Ford Explorer	ST-Line, RWD	View 2025 Explorer ›
2013	Land Rover Range Rover	HSE	View 2013 Range Rover ›
2014	Land Rover Range Rover	HSE	View 2014 Range Rover ›
2014	Land Rover Range Rover Sport	HSE, 3.0L Eng VIN V	View 2014 Range Rover Sport ›
2014	Land Rover Range Rover Sport	HSE, 3.0L Eng VIN W	View 2014 Range Rover Sport ›
2014	Land Rover Range Rover Sport	Supercharged	View 2014 Range Rover Sport ›
2015	Land Rover Range Rover	HSE	View 2015 Range Rover ›
2015	Land Rover Range Rover Sport	HSE, Automatic T/Case Control	View 2015 Range Rover Sport ›
2015	Land Rover Range Rover Sport	HSE, Full Time T/Case Control	View 2015 Range Rover Sport ›
2015	Land Rover Range Rover Sport	Supercharged	View 2015 Range Rover Sport ›
2016	Land Rover Range Rover	HSE, 3.0L Eng VIN V	View 2016 Range Rover ›
2016	Land Rover Range Rover	HSE, 3.0L Eng VIN P	View 2016 Range Rover ›
2016	Land Rover Range Rover Sport	HSE, 3.0L Eng VIN V	View 2016 Range Rover Sport ›
2016	Land Rover Range Rover Sport	HSE, 3.0L Eng VIN K	View 2016 Range Rover Sport ›
2016	Land Rover Range Rover	HSE, 3.0L Eng VIN K	View 2016 Range Rover ›
2016	Land Rover Range Rover Sport	HSE, 3.0L Eng VIN P	View 2016 Range Rover Sport ›
2016	Land Rover Range Rover Sport	Supercharged	View 2016 Range Rover Sport ›
2016	Land Rover Range Rover Sport	Supercharged Dynamic	View 2016 Range Rover Sport ›
2017	Land Rover Discovery	HSE Luxury, 3.0L Eng VIN K	View 2017 Discovery ›
2017	Land Rover Range Rover	HSE, 3.0L Eng VIN K	View 2017 Range Rover ›
2017	Land Rover Range Rover	HSE, 3.0L Eng VIN V	View 2017 Range Rover ›
2017	Land Rover Discovery	HSE, 3.0L Eng VIN V	View 2017 Discovery ›
2017	Land Rover Discovery	HSE Luxury, 3.0L Eng VIN V	View 2017 Discovery ›
2017	Land Rover Range Rover Sport	Autobiography	View 2017 Range Rover Sport ›
2017	Land Rover Discovery	HSE, 3.0L Eng VIN K	View 2017 Discovery ›
2017	Land Rover Range Rover Sport	Supercharged	View 2017 Range Rover Sport ›
2018	Land Rover Discovery	HSE Luxury, 3.0L Eng VIN K	View 2018 Discovery ›
2018	Land Rover Discovery	HSE Luxury, 3.0L Eng VIN V	View 2018 Discovery ›
2018	Land Rover Discovery	HSE, 3.0L Eng VIN V	View 2018 Discovery ›
2018	Land Rover Discovery	HSE, 3.0L Eng VIN K	View 2018 Discovery ›
2018	Land Rover Range Rover	HSE, 3.0L Eng VIN V	View 2018 Range Rover ›