What is the diameter of a 275/40R18 tire?

A 275/40R18 tire has an overall diameter of 26.66 inches (677.2mm).

How many revolutions per mile does a 275/40R18 tire make?

A 275/40R18 tire makes approximately 756 revolutions per mile.

What rim width is recommended for 275/40R18 tires?

The recommended wheel rim width for a 275/40R18 tire is 6.9" - 9.6".

275/40R18

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 275/40R18 tire size features an overall diameter of 26.66 inches, a section width of 10.8 inches (275mm), and rotates 756 times per mile. It is a standard factory tire fitment on 150+ vehicle models including BMW Z8.

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Physical Dimensions & Specs

Overall Diameter

26.66"

677.2 mm

Section Width

275 mm

10.83" wide

Sidewall Height

4.33"

110.0 mm (40% aspect)

Revolutions / Mile

756

Circumference: 83.76"

Rim Diameter

18"

Wheel size

Recommended Rim Width

6.9" - 9.6"

Optimal rim width range

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 275/40R18 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)275/40R18

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:26.7"

Sidewall:4.3"

Revs/Mile:756

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

+10.9%At 60 mph reading, actual speed is 66.6 mph

Indicated	Actual Speed	Diff
20 mph	22.2 mph	+2.2 mph
30 mph	33.3 mph	+3.3 mph
45 mph	49.9 mph	+4.9 mph
60 mph	66.6 mph	+6.6 mph
75 mph	83.2 mph	+8.2 mph
90 mph	99.8 mph	+9.8 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:+1.46" ground clearance

Vehicles That Fit 275/40R18 (150+ Models)

Factory standard and optional vehicle fitments utilizing 275/40R18 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2000	BMW Z8	Z8	View 2000 Z8 ›
2001	BMW Z8	Z8	View 2001 Z8 ›
2002	BMW Z8	Z8	View 2002 Z8 ›
2003	BMW Z8	Base	View 2003 Z8 ›
2013	BMW 528i	528i	View 2013 528i ›
2014	BMW 528i	528i	View 2014 528i ›
2015	BMW M3	Automatic DCT Trans	View 2015 M3 ›
2015	BMW M3	Standard Trans	View 2015 M3 ›
2015	BMW M4	2D Convertible	View 2015 M4 ›
2015	BMW M4	2D Coupe	View 2015 M4 ›
2015	BMW 528i	528i	View 2015 528i ›
2015	BMW 528i xDrive	528i xDrive	View 2015 528i xDrive ›
2016	BMW M3	Automatic DCT Trans	View 2016 M3 ›
2016	BMW M3	Standard Trans	View 2016 M3 ›
2016	BMW M4	Base, 2D Convertible, Automatic DCT Trans	View 2016 M4 ›
2016	BMW M4	Base, 2D Convertible, Standard Trans	View 2016 M4 ›
2016	BMW M4	Base, 2D Coupe, Automatic DCT Trans	View 2016 M4 ›
2016	BMW M4	Base, 2D Coupe, Standard Trans	View 2016 M4 ›
2016	BMW 528i	528i	View 2016 528i ›
2016	BMW 528i xDrive	528i xDrive	View 2016 528i xDrive ›
2017	BMW M3	Automatic DCT Trans	View 2017 M3 ›
2017	BMW M3	Standard Trans	View 2017 M3 ›
2017	BMW M4	2D Convertible, Automatic DCT Trans	View 2017 M4 ›
2017	BMW M4	2D Convertible, Standard Trans	View 2017 M4 ›
2017	BMW M4	2D Coupe, Automatic DCT Trans	View 2017 M4 ›
2017	BMW M4	2D Coupe, Standard Trans	View 2017 M4 ›
2018	BMW M3	Standard Trans	View 2018 M3 ›
2018	BMW M3	Automatic DCT Trans	View 2018 M3 ›
2018	BMW M4	2D Convertible, Automatic DCT Trans	View 2018 M4 ›
2018	BMW M4	2D Convertible, Standard Trans	View 2018 M4 ›
2018	BMW M4	2D Coupe, Automatic DCT Trans	View 2018 M4 ›
2018	BMW M4	2D Coupe, Standard Trans	View 2018 M4 ›
2019	BMW M4	Base, 2D Convertible, Automatic DCT Trans	View 2019 M4 ›
2019	BMW M4	Base, 2D Convertible, Standard Trans	View 2019 M4 ›
2019	BMW M4	Base, 2D Coupe, Automatic DCT Trans	View 2019 M4 ›
2019	BMW M4	Base, 2D Coupe, Standard Trans	View 2019 M4 ›
2020	BMW 840i	2D Convertible	View 2020 840i ›
2020	BMW 840i	2D Coupe	View 2020 840i ›
2020	BMW 840i xDrive	2D Convertible	View 2020 840i xDrive ›
2020	BMW 840i xDrive	2D Coupe	View 2020 840i xDrive ›
2020	BMW M4	Base, 2D Coupe, Standard Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Convertible, Standard Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Coupe, Automatic DCT Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Convertible, Automatic DCT Trans	View 2020 M4 ›
2020	BMW Z4	sDrive M40i	View 2020 Z4 ›
2020	BMW 840i Gran Coupe	840i Gran Coupe	View 2020 840i Gran Coupe ›
2020	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2020 840i Gran Coupe xDrive ›
2021	BMW 840i	2D Coupe	View 2021 840i ›
2021	BMW 840i xDrive	2D Convertible	View 2021 840i xDrive ›
2021	BMW 840i xDrive	2D Coupe	View 2021 840i xDrive ›
2021	BMW 840i	2D Convertible	View 2021 840i ›
2021	BMW M4	Base, Automatic Trans	View 2021 M4 ›
2021	BMW M3	Base, Standard Trans	View 2021 M3 ›
2021	BMW M3	Base, Automatic Trans	View 2021 M3 ›
2021	BMW M3	Competition	View 2021 M3 ›
2021	BMW M4	Base, Standard Trans	View 2021 M4 ›
2021	BMW M4	Competition	View 2021 M4 ›
2021	BMW Z4	sDrive M40i	View 2021 Z4 ›
2021	BMW 840i Gran Coupe	840i Gran Coupe	View 2021 840i Gran Coupe ›
2021	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2021 840i Gran Coupe xDrive ›
2022	BMW M3	Base, Standard Trans	View 2022 M3 ›
2022	BMW M3	Base, Automatic Trans	View 2022 M3 ›
2022	BMW M4	Base, Standard Trans	View 2022 M4 ›
2022	BMW M4	Base, Automatic Trans	View 2022 M4 ›
2022	BMW Z4	sDrive M40i	View 2022 Z4 ›
2023	BMW M3	Base, Standard Trans	View 2023 M3 ›
2023	BMW M4	Base	View 2023 M4 ›
2023	BMW M3	Base, Automatic Trans	View 2023 M3 ›
2023	BMW Z4	sDrive M40i	View 2023 Z4 ›
2024	BMW M3	Base, Standard Trans	View 2024 M3 ›
2024	BMW M4	Base	View 2024 M4 ›
2024	BMW M3	Base, Automatic Trans	View 2024 M3 ›
2024	BMW Z4	sDrive M40i	View 2024 Z4 ›
2025	BMW M4	Base	View 2025 M4 ›
2025	BMW M3	Base	View 2025 M3 ›
2025	BMW Z4	sDrive M40i, Standard Trans	View 2025 Z4 ›
2014	Jaguar F-Type	Base	View 2014 F-Type ›
2015	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN T	View 2015 F-Type ›
2015	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 7	View 2015 F-Type ›
2015	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 7	View 2015 F-Type ›
2015	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN T	View 2015 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 6, Standard Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 7, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 6, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN T, Standard Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 6, Standard Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 6, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 7, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 7, Standard Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN T, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 7, Standard Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN T, Automatic Trans	View 2016 F-Type ›
2016	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN T, Standard Trans	View 2016 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 6, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 7, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 6, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 7, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 6, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN T, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 6, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN 7, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN T, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN T, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN T, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN 7, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN 6, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN 6, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN 7, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN 7, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN T, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Convertible, 3.0L Eng VIN T, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN 6, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN 6, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN 7, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN 7, Standard Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN T, Automatic Trans	View 2017 F-Type ›
2017	Jaguar F-Type	Premium, 2D Coupe, 3.0L Eng VIN T, Standard Trans	View 2017 F-Type ›
2018	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, AWD	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Convertible, 2.0L Eng VIN X	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, RWD, Standard Trans	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, RWD, Automatic Trans	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Coupe, 2.0L Eng VIN X	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, AWD	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, RWD, Automatic Trans	View 2018 F-Type ›
2018	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, RWD, Standard Trans	View 2018 F-Type ›
2019	Jaguar F-Type	Base, 2D Convertible, 2.0L Eng VIN X	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, AWD	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, RWD, Automatic Trans	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, RWD, Automatic Trans	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V, RWD, Standard Trans	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, AWD	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Coupe, 2.0L Eng VIN X	View 2019 F-Type ›
2019	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V, RWD, Standard Trans	View 2019 F-Type ›
2020	Jaguar F-Type	Base, 2D Coupe, 2.0L Eng VIN X	View 2020 F-Type ›
2020	Jaguar F-Type	Base, 2D Coupe, 3.0L Eng VIN V	View 2020 F-Type ›
2020	Jaguar F-Type	Base, 2D Convertible, 3.0L Eng VIN V	View 2020 F-Type ›
2020	Jaguar F-Type	Base, 2D Convertible, 2.0L Eng VIN X	View 2020 F-Type ›
2021	Jaguar F-Type	Base, 2D Coupe	View 2021 F-Type ›
2021	Jaguar F-Type	Base, 2D Convertible	View 2021 F-Type ›
2000	Mercedes-Benz S430	S430	View 2000 S430 ›
2000	Mercedes-Benz S500	S500	View 2000 S500 ›
2001	Mercedes-Benz CL500	CL500	View 2001 CL500 ›
2001	Mercedes-Benz CL55	CL55	View 2001 CL55 ›
2001	Mercedes-Benz CL600	CL600	View 2001 CL600 ›
2001	Mercedes-Benz S430	S430	View 2001 S430 ›
2001	Mercedes-Benz S500	S500	View 2001 S500 ›
2001	Mercedes-Benz S55	S55	View 2001 S55 ›
2001	Mercedes-Benz S600	S600	View 2001 S600 ›
2002	Mercedes-Benz CL500	CL500	View 2002 CL500 ›
2002	Mercedes-Benz CL55	CL55	View 2002 CL55 ›