What is the diameter of a 235/50R18 tire?

A 235/50R18 tire has an overall diameter of 27.25 inches (692.1mm).

How many revolutions per mile does a 235/50R18 tire make?

A 235/50R18 tire makes approximately 740 revolutions per mile.

What rim width is recommended for 235/50R18 tires?

The recommended wheel rim width for a 235/50R18 tire is 5.9" - 8.2".

235/50R18

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 235/50R18 tire size features an overall diameter of 27.25 inches, a section width of 9.3 inches (235mm), and rotates 740 times per mile. It is a standard factory tire fitment on 150+ vehicle models including Acura TLX.

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Physical Dimensions & Specs

Overall Diameter

27.25"

692.1 mm

Section Width

235 mm

9.25" wide

Sidewall Height

4.63"

117.6 mm (50% aspect)

Revolutions / Mile

740

Circumference: 85.61"

Rim Diameter

18"

Wheel size

Recommended Rim Width

5.9" - 8.2"

Optimal rim width range

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 235/50R18 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)235/50R18

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:27.3"

Sidewall:4.6"

Revs/Mile:740

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

+8.5%At 60 mph reading, actual speed is 65.1 mph

Indicated	Actual Speed	Diff
20 mph	21.7 mph	+1.7 mph
30 mph	32.6 mph	+2.6 mph
45 mph	48.8 mph	+3.8 mph
60 mph	65.1 mph	+5.1 mph
75 mph	81.4 mph	+6.4 mph
90 mph	97.7 mph	+7.7 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:+1.16" ground clearance

Vehicles That Fit 235/50R18 (150+ Models)

Factory standard and optional vehicle fitments utilizing 235/50R18 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2021	Acura TLX	Base	View 2021 TLX ›
2021	Acura TLX	SH-AWD	View 2021 TLX ›
2022	Acura TLX	SH-AWD	View 2022 TLX ›
2022	Acura TLX	Base	View 2022 TLX ›
2023	Acura TLX	SH-AWD	View 2023 TLX ›
2023	Acura TLX	Base	View 2023 TLX ›
2015	Audi Q3	Premium Plus	View 2015 Q3 ›
2015	Audi Q3	Prestige	View 2015 Q3 ›
2015	Audi Q3 Quattro	Premium Plus	View 2015 Q3 Quattro ›
2015	Audi Q3 Quattro	Prestige	View 2015 Q3 Quattro ›
2016	Audi Q3	Premium Plus	View 2016 Q3 ›
2016	Audi Q3 Quattro	Premium Plus	View 2016 Q3 Quattro ›
2017	Audi Q3	Premium	View 2017 Q3 ›
2017	Audi Q3	Premium Plus	View 2017 Q3 ›
2017	Audi Q3 Quattro	Premium	View 2017 Q3 Quattro ›
2017	Audi Q3 Quattro	Premium Plus	View 2017 Q3 Quattro ›
2018	Audi Q3	Premium	View 2018 Q3 ›
2018	Audi Q3	Premium Plus	View 2018 Q3 ›
2018	Audi Q3 Quattro	Premium	View 2018 Q3 Quattro ›
2018	Audi Q3 Quattro	Premium Plus	View 2018 Q3 Quattro ›
2006	BMW X3	Automatic	View 2006 X3 ›
2006	BMW X3	Standard	View 2006 X3 ›
2007	BMW X3	Automatic	View 2007 X3 ›
2007	BMW X3	Standard	View 2007 X3 ›
2008	BMW X3	Automatic	View 2008 X3 ›
2008	BMW X3	Standard	View 2008 X3 ›
2009	BMW X3	Standard	View 2009 X3 ›
2009	BMW X3	Automatic	View 2009 X3 ›
2010	BMW X3	Automatic	View 2010 X3 ›
2010	BMW X3	Standard	View 2010 X3 ›
2017	Buick LaCrosse	Base	View 2017 LaCrosse ›
2017	Buick LaCrosse	Essence	View 2017 LaCrosse ›
2017	Buick LaCrosse	Preferred	View 2017 LaCrosse ›
2017	Buick LaCrosse	Premium, AWD	View 2017 LaCrosse ›
2017	Buick LaCrosse	Premium, FWD	View 2017 LaCrosse ›
2018	Buick LaCrosse	Base	View 2018 LaCrosse ›
2018	Buick LaCrosse	Essence, 2.5L Eng VIN Z	View 2018 LaCrosse ›
2018	Buick LaCrosse	Essence, 3.6L Eng VIN S	View 2018 LaCrosse ›
2018	Buick LaCrosse	Preferred, 2.5L Eng VIN Z	View 2018 LaCrosse ›
2018	Buick LaCrosse	Preferred, 3.6L Eng VIN S	View 2018 LaCrosse ›
2018	Buick LaCrosse	Premium, 3.6L Eng VIN S, FWD	View 2018 LaCrosse ›
2018	Buick LaCrosse	Premium, 2.5L Eng VIN Z	View 2018 LaCrosse ›
2018	Buick LaCrosse	Premium, 3.6L Eng VIN S, AWD	View 2018 LaCrosse ›
2018	Buick Regal TourX	Preferred	View 2018 Regal TourX ›
2018	Buick Regal TourX	Base	View 2018 Regal TourX ›
2018	Buick Regal TourX	Essence	View 2018 Regal TourX ›
2019	Buick LaCrosse	Base	View 2019 LaCrosse ›
2019	Buick LaCrosse	Essence, 3.6L Eng VIN S, FWD	View 2019 LaCrosse ›
2019	Buick LaCrosse	Essence, 3.6L Eng VIN S, AWD	View 2019 LaCrosse ›
2019	Buick LaCrosse	Preferred, 3.6L Eng VIN S	View 2019 LaCrosse ›
2019	Buick LaCrosse	Essence, 2.5L Eng VIN Z	View 2019 LaCrosse ›
2019	Buick LaCrosse	Preferred, 2.5L Eng VIN Z	View 2019 LaCrosse ›
2019	Buick LaCrosse	Premium, 2.5L Eng VIN Z	View 2019 LaCrosse ›
2019	Buick LaCrosse	Premium, 3.6L Eng VIN S, AWD	View 2019 LaCrosse ›
2019	Buick LaCrosse	Premium, 3.6L Eng VIN S, FWD	View 2019 LaCrosse ›
2019	Buick Regal TourX	Base	View 2019 Regal TourX ›
2019	Buick Regal TourX	Essence	View 2019 Regal TourX ›
2019	Buick Regal TourX	Preferred	View 2019 Regal TourX ›
2020	Buick Regal TourX	Base	View 2020 Regal TourX ›
2020	Buick Regal TourX	Essence	View 2020 Regal TourX ›
2020	Buick Regal TourX	Preferred	View 2020 Regal TourX ›
2008	Cadillac CTS	3.6 7, RWD, Automatic	View 2008 CTS ›
2008	Cadillac CTS	3.6 7, AWD	View 2008 CTS ›
2008	Cadillac CTS	3.6 7, RWD, Standard	View 2008 CTS ›
2008	Cadillac CTS	3.6 V, RWD, Automatic	View 2008 CTS ›
2008	Cadillac CTS	3.6 V, AWD	View 2008 CTS ›
2008	Cadillac CTS	3.6 V, RWD, Standard	View 2008 CTS ›
2009	Cadillac CTS	Base, 3.6 7, AWD	View 2009 CTS ›
2009	Cadillac CTS	Base, 3.6 7, RWD, Standard	View 2009 CTS ›
2009	Cadillac CTS	Base, 3.6 V, AWD	View 2009 CTS ›
2009	Cadillac CTS	Base, 3.6 V, RWD, Automatic	View 2009 CTS ›
2009	Cadillac CTS	Base, 3.6 V, RWD, Standard	View 2009 CTS ›
2009	Cadillac CTS	Base, 3.6 7, RWD, Automatic	View 2009 CTS ›
2010	Cadillac CTS	Base, 4D Sedan, 3.6 V, RWD, Standard	View 2010 CTS ›
2010	Cadillac CTS	Base, 4D Sedan, 3.6 V, AWD	View 2010 CTS ›
2010	Cadillac CTS	Base, 4D Sedan, 3.6 V, RWD, Automatic	View 2010 CTS ›
2010	Cadillac CTS	Base, 4D Wagon, 3.6 V, AWD	View 2010 CTS ›
2010	Cadillac CTS	Base, 4D Wagon, 3.6 V, RWD	View 2010 CTS ›
2016	Cadillac CT6	Base, 3.6L Eng VIN S	View 2016 CT6 ›
2016	Cadillac CT6	Base, 2.0L Eng VIN X	View 2016 CT6 ›
2016	Cadillac CT6	Luxury, 2.0L Eng VIN X	View 2016 CT6 ›
2016	Cadillac CT6	Luxury, 3.0L Eng VIN 6	View 2016 CT6 ›
2016	Cadillac CT6	Luxury, 3.6L Eng VIN S	View 2016 CT6 ›
2017	Cadillac CT6	Luxury, 3.6L Eng VIN S	View 2017 CT6 ›
2017	Cadillac CT6	Luxury, 2.0L Eng VIN X	View 2017 CT6 ›
2017	Cadillac CT6	Plug-In	View 2017 CT6 ›
2017	Cadillac CT6	Luxury, 3.0L Eng VIN 6	View 2017 CT6 ›
2017	Cadillac CT6	Base, 3.6L Eng VIN S	View 2017 CT6 ›
2017	Cadillac CT6	Base, 2.0L Eng VIN X	View 2017 CT6 ›
2018	Cadillac CT6	Luxury, 2.0L Eng VIN X	View 2018 CT6 ›
2018	Cadillac CT6	Base, 2.0L Eng VIN X	View 2018 CT6 ›
2018	Cadillac CT6	Luxury, 3.0L Eng VIN 6	View 2018 CT6 ›
2018	Cadillac CT6	Base, 3.6L Eng VIN S	View 2018 CT6 ›
2018	Cadillac CT6	Luxury, 3.6L Eng VIN S	View 2018 CT6 ›
2018	Cadillac CT6	Plug-In	View 2018 CT6 ›
2019	Cadillac CT6	Luxury, 2.0L Eng VIN K	View 2019 CT6 ›
2019	Cadillac CT6	Luxury, 3.6L Eng VIN S	View 2019 CT6 ›
2020	Cadillac CT6	Luxury	View 2020 CT6 ›
2008	Ford Mustang	Bullitt	View 2008 Mustang ›
2008	Ford Mustang	GT, 2D Convertible, Automatic	View 2008 Mustang ›
2008	Ford Mustang	GT, 2D Convertible, Standard	View 2008 Mustang ›
2008	Ford Mustang	GT, 2D Coupe, Automatic	View 2008 Mustang ›
2008	Ford Mustang	GT, 2D Coupe, Standard	View 2008 Mustang ›
2009	Ford Mustang	Bullitt	View 2009 Mustang ›
2013	Ford Escape	SEL, 1.6L Eng VIN X, AWD	View 2013 Escape ›
2013	Ford Escape	SEL, 1.6L Eng VIN X, FWD	View 2013 Escape ›
2013	Ford Escape	SEL, 2.0L Eng VIN 9, FWD	View 2013 Escape ›
2013	Ford Escape	SEL, 2.0L Eng VIN 9, AWD	View 2013 Escape ›
2014	Ford Escape	Titanium, 1.6L Eng VIN X, AWD	View 2014 Escape ›
2014	Ford Escape	Titanium, 1.6L Eng VIN X, FWD	View 2014 Escape ›
2014	Ford Escape	Titanium, 2.0L Eng VIN 9, FWD	View 2014 Escape ›
2014	Ford Escape	Titanium, 2.0L Eng VIN 9, AWD	View 2014 Escape ›
2015	Ford Escape	Titanium, 1.6L Eng VIN X, AWD	View 2015 Escape ›
2015	Ford Escape	Titanium, 1.6L Eng VIN X, FWD	View 2015 Escape ›
2015	Ford Escape	Titanium, 2.0L Eng VIN 9, AWD	View 2015 Escape ›
2015	Ford Escape	Titanium, 2.0L Eng VIN 9, FWD	View 2015 Escape ›
2015	Ford Mustang	EcoBoost Premium, 2D Convertible, Automatic Trans	View 2015 Mustang ›
2015	Ford Mustang	EcoBoost Premium, 2D Convertible, Standard Trans	View 2015 Mustang ›
2015	Ford Mustang	EcoBoost Premium, 2D Coupe, Automatic Trans	View 2015 Mustang ›
2015	Ford Mustang	EcoBoost Premium, 2D Coupe, Standard Trans	View 2015 Mustang ›
2015	Ford Mustang	GT Premium, 2D Convertible, Automatic Trans	View 2015 Mustang ›
2015	Ford Mustang	GT Premium, 2D Convertible, Standard Trans	View 2015 Mustang ›
2015	Ford Mustang	GT Premium, 2D Coupe, Automatic Trans	View 2015 Mustang ›
2015	Ford Mustang	GT Premium, 2D Coupe, Standard Trans	View 2015 Mustang ›
2015	Ford Mustang	GT, Automatic Trans	View 2015 Mustang ›
2015	Ford Mustang	GT, Standard Trans	View 2015 Mustang ›
2016	Ford Escape	Titanium, 1.6L Eng VIN X, AWD	View 2016 Escape ›
2016	Ford Escape	Titanium, 1.6L Eng VIN X, FWD	View 2016 Escape ›
2016	Ford Escape	Titanium, 2.0L Eng VIN 9, AWD	View 2016 Escape ›
2016	Ford Escape	Titanium, 2.0L Eng VIN 9, FWD	View 2016 Escape ›
2016	Ford Mustang	EcoBoost Premium, 2D Convertible, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	EcoBoost Premium, 2D Convertible, Standard Trans	View 2016 Mustang ›
2016	Ford Mustang	EcoBoost Premium, 2D Coupe, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	EcoBoost, Standard Trans	View 2016 Mustang ›
2016	Ford Mustang	GT Premium, 2D Convertible, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	EcoBoost, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	EcoBoost Premium, 2D Coupe, Standard Trans	View 2016 Mustang ›
2016	Ford Mustang	GT Premium, 2D Convertible, Standard Trans	View 2016 Mustang ›
2016	Ford Mustang	GT, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	GT Premium, 2D Coupe, Standard Trans	View 2016 Mustang ›
2016	Ford Mustang	GT Premium, 2D Coupe, Automatic Trans	View 2016 Mustang ›
2016	Ford Mustang	GT, Standard Trans	View 2016 Mustang ›
2017	Ford Escape	Titanium, 1.5L Eng VIN D, AWD	View 2017 Escape ›
2017	Ford Escape	Titanium, 1.5L Eng VIN D, FWD	View 2017 Escape ›
2017	Ford Escape	Titanium, 2.0L Eng VIN 9, FWD	View 2017 Escape ›
2017	Ford Escape	Titanium, 2.0L Eng VIN 9, AWD	View 2017 Escape ›
2017	Ford Mustang	EcoBoost Premium, 2D Convertible, Automatic Trans	View 2017 Mustang ›
2017	Ford Mustang	EcoBoost Premium, 2D Convertible, Standard Trans	View 2017 Mustang ›
2017	Ford Mustang	EcoBoost Premium, 2D Coupe, Automatic Trans	View 2017 Mustang ›
2017	Ford Mustang	EcoBoost Premium, 2D Coupe, Standard Trans	View 2017 Mustang ›