What is the diameter of a P235/55R18 tire?

A P235/55R18 tire has an overall diameter of 28.18 inches (715.8mm).

How many revolutions per mile does a P235/55R18 tire make?

A P235/55R18 tire makes approximately 716 revolutions per mile.

What rim width is recommended for P235/55R18 tires?

The recommended wheel rim width for a P235/55R18 tire is 5.9" - 8.2".

P235/55R18

Passenger / P-Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The P235/55R18 tire size features an overall diameter of 28.18 inches, a section width of 9.3 inches (235mm), and rotates 716 times per mile. It is a standard factory tire fitment on 150+ vehicle models including Acura RDX.

Shop P235/55R18 Tires on Tire Rack →Buy on Amazon →

Physical Dimensions & Specs

Overall Diameter

28.18"

715.8 mm

Section Width

235 mm

9.25" wide

Sidewall Height

5.09"

129.3 mm (55% aspect)

Revolutions / Mile

716

Circumference: 88.52"

Rim Diameter

18"

Wheel size

Recommended Rim Width

5.9" - 8.2"

Optimal rim width range

Where to Buy & Install P235/55R18 Tires

Looking for P235/55R18 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:

⭐ Recommended · Ship to Local Shop

Tire Rack

Free shipping directly to over 10,000+ certified local installers.

✓Delivered to local installer (Firestone, Discount Tire & local shops)
✓Mobile installation available — mount & balance right in your driveway
✓Free 2-year road hazard warranty on most eligible tire models

🏎️Find P235/55R18 on Tire Rack (Local Install) →

Direct Home Delivery

Amazon Automotive

Fast doorstep shipping for DIYers or bringing to your own shop.

✓Prime doorstep shipping for home garages or spares
✓Huge range of budget and specialty tire sizes in stock
✓Ideal if you have a local independent mechanic you prefer

🛒Shop P235/55R18 on Amazon →

As an affiliate for Tire Rack and Amazon, we earn from qualifying purchases at no extra cost to you.

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare P235/55R18 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)235/55R18

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:28.2"

Sidewall:5.1"

Revs/Mile:716

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

+5.0%At 60 mph reading, actual speed is 63.0 mph

Indicated	Actual Speed	Diff
20 mph	21.0 mph	+1.0 mph
30 mph	31.5 mph	+1.5 mph
45 mph	47.2 mph	+2.2 mph
60 mph	63.0 mph	+3.0 mph
75 mph	78.7 mph	+3.7 mph
90 mph	94.5 mph	+4.5 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:+0.70" ground clearance

Vehicles That Fit P235/55R18 (150+ Models)

Factory standard and optional vehicle fitments utilizing P235/55R18 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2007	Acura RDX	RDX	View 2007 RDX ›
2008	Acura RDX	RDX	View 2008 RDX ›
2009	Acura RDX	RDX	View 2009 RDX ›
2010	Acura RDX	2.3 TB1	View 2010 RDX ›
2010	Acura RDX	2.3 TB2	View 2010 RDX ›
2011	Acura RDX	2.3 TB1	View 2011 RDX ›
2011	Acura RDX	2.3 TB2	View 2011 RDX ›
2012	Acura RDX	2.3L Eng VIN TB2	View 2012 RDX ›
2012	Acura RDX	2.3L Eng VIN TB1	View 2012 RDX ›
2013	Chevrolet Captiva Sport	LTZ, 2.4L Eng VIN K, AWD	View 2013 Captiva Sport ›
2013	Chevrolet Captiva Sport	LTZ, 2.4L Eng VIN K, FWD	View 2013 Captiva Sport ›
2013	Chevrolet Captiva Sport	LTZ, 3.0L Eng VIN 5, AWD	View 2013 Captiva Sport ›
2013	Chevrolet Captiva Sport	LTZ, 3.0L Eng VIN 5, FWD	View 2013 Captiva Sport ›
2014	Chevrolet Captiva Sport	LT	View 2014 Captiva Sport ›
2014	Chevrolet Captiva Sport	LTZ	View 2014 Captiva Sport ›
2014	Chevrolet Equinox	LTZ, 4D Utility	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 2.4L Eng VIN K, AWD, Gas	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 2.4L Eng VIN K, AWD, Gas/Ethanol	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 2.4L Eng VIN K, FWD, Gas	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 2.4L Eng VIN K, FWD, Gas/Ethanol	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 3.6L Eng VIN 3, AWD	View 2014 Equinox ›
2014	Chevrolet Equinox	LTZ, 4D Utility Wagon, 3.6L Eng VIN 3, FWD	View 2014 Equinox ›
2015	Chevrolet Captiva Sport	LT	View 2015 Captiva Sport ›
2015	Chevrolet Captiva Sport	LTZ	View 2015 Captiva Sport ›
2015	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, AWD, Gas	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, AWD, Gas/Ethanol	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, FWD, Gas	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, FWD, Gas/Ethanol	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 3.6L Eng VIN 3, AWD, Gas	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 3.6L Eng VIN 3, AWD, Gas/Ethanol	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 3.6L Eng VIN 3, FWD, Gas	View 2015 Equinox ›
2015	Chevrolet Equinox	LTZ, 3.6L Eng VIN 3, FWD, Gas/Ethanol	View 2015 Equinox ›
2016	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, AWD, Gas	View 2016 Equinox ›
2016	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, AWD, Gas/Ethanol	View 2016 Equinox ›
2016	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, FWD, Gas	View 2016 Equinox ›
2016	Chevrolet Equinox	LTZ, 2.4L Eng VIN K, FWD, Gas/Ethanol	View 2016 Equinox ›
2016	Chevrolet Equinox	LTZ, 3.6L Eng VIN 3	View 2016 Equinox ›
2017	Chevrolet Equinox	Premier, 2.4L Eng VIN K, AWD, Gas	View 2017 Equinox ›
2017	Chevrolet Equinox	Premier, 2.4L Eng VIN K, FWD, Gas	View 2017 Equinox ›
2017	Chevrolet Equinox	Premier, 2.4L Eng VIN K, AWD, Gas/Ethanol	View 2017 Equinox ›
2017	Chevrolet Equinox	Premier, 2.4L Eng VIN K, FWD, Gas/Ethanol	View 2017 Equinox ›
2017	Chevrolet Equinox	Premier, 3.6L Eng VIN 3	View 2017 Equinox ›
2006	Dodge Charger	Daytona R/T	View 2006 Charger ›
2006	Dodge Charger	R/T	View 2006 Charger ›
2009	Dodge Challenger	R/T, EZC, Automatic	View 2009 Challenger ›
2009	Dodge Challenger	R/T, EZC, Standard	View 2009 Challenger ›
2009	Dodge Challenger	R/T, EZD, Automatic	View 2009 Challenger ›
2009	Dodge Challenger	R/T, EZD, Standard	View 2009 Challenger ›
2009	Dodge Challenger	R/T, EZH	View 2009 Challenger ›
2010	Dodge Challenger	R/T, EZC	View 2010 Challenger ›
2010	Dodge Challenger	R/T, EZH, Automatic	View 2010 Challenger ›
2010	Dodge Challenger	R/T, EZH, Standard	View 2010 Challenger ›
2011	Dodge Challenger	R/T, EZC	View 2011 Challenger ›
2011	Dodge Challenger	R/T, EZH	View 2011 Challenger ›
2011	Dodge Challenger	SE	View 2011 Challenger ›
2011	Dodge Charger	SE, 3.6 G, Gas/Ethanol	View 2011 Charger ›
2011	Dodge Charger	SE, 5.7 T	View 2011 Charger ›
2011	Dodge Charger	R/T, RWD	View 2011 Charger ›
2011	Dodge Charger	SE, 3.6 G, Gas	View 2011 Charger ›
2012	Dodge Challenger	R/T, Eng CD EZC	View 2012 Challenger ›
2012	Dodge Challenger	R/T, Eng CD EZH	View 2012 Challenger ›
2012	Dodge Challenger	SXT	View 2012 Challenger ›
2012	Dodge Challenger	SXT Plus	View 2012 Challenger ›
2012	Dodge Charger	R/T, RWD	View 2012 Charger ›
2012	Dodge Charger	SXT Plus, RWD, Gas	View 2012 Charger ›
2012	Dodge Charger	SXT Plus, RWD, Gas/Ethanol	View 2012 Charger ›
2013	Dodge Challenger	R/T, Eng CD EZC	View 2013 Challenger ›
2013	Dodge Challenger	R/T, Eng CD EZH	View 2013 Challenger ›
2013	Dodge Challenger	SXT	View 2013 Challenger ›
2013	Dodge Charger	R/T, RWD	View 2013 Charger ›
2014	Dodge Challenger	R/T, Eng CD EZC	View 2014 Challenger ›
2014	Dodge Challenger	SXT	View 2014 Challenger ›
2014	Dodge Challenger	R/T, Eng CD EZH	View 2014 Challenger ›
2014	Dodge Charger	R/T, RWD	View 2014 Charger ›
2015	Dodge Challenger	SXT	View 2015 Challenger ›
2015	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas	View 2015 Charger ›
2015	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas/Ethanol	View 2015 Charger ›
2015	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas	View 2015 Charger ›
2015	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas/Ethanol	View 2015 Charger ›
2016	Dodge Challenger	SXT	View 2016 Challenger ›
2016	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas	View 2016 Charger ›
2016	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas/Ethanol	View 2016 Charger ›
2016	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas	View 2016 Charger ›
2016	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas/Ethanol	View 2016 Charger ›
2017	Dodge Challenger	SXT	View 2017 Challenger ›
2017	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas	View 2017 Charger ›
2017	Dodge Charger	SXT, RWD, Trans Mfr CD 845RE, Gas/Ethanol	View 2017 Charger ›
2017	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas	View 2017 Charger ›
2017	Dodge Charger	SXT, RWD, Trans Mfr CD 8HP45, Gas/Ethanol	View 2017 Charger ›
2018	Dodge Challenger	SXT	View 2018 Challenger ›
2018	Dodge Charger	SXT	View 2018 Charger ›
2018	Dodge Charger	SXT Plus	View 2018 Charger ›
2010	Ford Taurus	SEL, AWD	View 2010 Taurus ›
2010	Ford Taurus	SEL, FWD	View 2010 Taurus ›
2011	Ford Taurus	SEL, AWD	View 2011 Taurus ›
2011	Ford Taurus	SEL, FWD	View 2011 Taurus ›
2012	Ford Taurus	SEL, AWD	View 2012 Taurus ›
2012	Ford Taurus	SEL, FWD	View 2012 Taurus ›
2013	Ford Taurus	SEL, 2.0L Eng VIN 9	View 2013 Taurus ›
2013	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD	View 2013 Taurus ›
2013	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD	View 2013 Taurus ›
2014	Ford Taurus	SEL, 2.0L Eng VIN 9	View 2014 Taurus ›
2014	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD	View 2014 Taurus ›
2014	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD	View 2014 Taurus ›
2015	Ford Taurus	SEL, 2.0L Eng VIN 9	View 2015 Taurus ›
2015	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas	View 2015 Taurus ›
2015	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas/Ethanol	View 2015 Taurus ›
2015	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas	View 2015 Taurus ›
2015	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas/Ethanol	View 2015 Taurus ›
2016	Ford Taurus	SE, 2.0L Eng VIN 9	View 2016 Taurus ›
2016	Ford Taurus	SE, 3.5L Eng VIN 8, Gas	View 2016 Taurus ›
2016	Ford Taurus	SE, 3.5L Eng VIN 8, Gas/Ethanol	View 2016 Taurus ›
2016	Ford Taurus	SEL, 2.0L Eng VIN 9	View 2016 Taurus ›
2016	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas	View 2016 Taurus ›
2016	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas/Ethanol	View 2016 Taurus ›
2016	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas	View 2016 Taurus ›
2016	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas/Ethanol	View 2016 Taurus ›
2017	Ford Taurus	SE, 2.0L Eng VIN 9	View 2017 Taurus ›
2017	Ford Taurus	SE, 3.5L Eng VIN 8, Gas	View 2017 Taurus ›
2017	Ford Taurus	SE, 3.5L Eng VIN 8, Gas/Ethanol	View 2017 Taurus ›
2017	Ford Taurus	SEL, 2.0L Eng VIN 9	View 2017 Taurus ›
2017	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas	View 2017 Taurus ›
2017	Ford Taurus	SEL, 3.5L Eng VIN 8, AWD, Gas/Ethanol	View 2017 Taurus ›
2017	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas	View 2017 Taurus ›
2017	Ford Taurus	SEL, 3.5L Eng VIN 8, FWD, Gas/Ethanol	View 2017 Taurus ›
2018	Ford Taurus	SE, Gas	View 2018 Taurus ›
2018	Ford Taurus	SE, Gas/Ethanol	View 2018 Taurus ›
2018	Ford Taurus	SEL, AWD, Gas	View 2018 Taurus ›
2018	Ford Taurus	SEL, AWD, Gas/Ethanol	View 2018 Taurus ›
2018	Ford Taurus	SEL, FWD, Gas	View 2018 Taurus ›
2018	Ford Taurus	SEL, FWD, Gas/Ethanol	View 2018 Taurus ›
2019	Ford Taurus	SE, Gas	View 2019 Taurus ›
2019	Ford Taurus	SE, Gas/Ethanol	View 2019 Taurus ›
2019	Ford Taurus	SEL, AWD, Gas	View 2019 Taurus ›
2019	Ford Taurus	SEL, FWD, Gas	View 2019 Taurus ›
2019	Ford Taurus	SEL, AWD, Gas/Ethanol	View 2019 Taurus ›
2019	Ford Taurus	SEL, FWD, Gas/Ethanol	View 2019 Taurus ›
2009	Lexus RX 350	AWD	View 2009 RX 350 ›
2009	Lexus RX 350	FWD	View 2009 RX 350 ›
2009	Lincoln MKS	AWD	View 2009 MKS ›
2009	Lincoln MKS	FWD	View 2009 MKS ›
2010	Lincoln MKS	Base, AWD	View 2010 MKS ›
2010	Lincoln MKS	Base, FWD	View 2010 MKS ›
2011	Lincoln MKS	Base, AWD	View 2011 MKS ›
2011	Lincoln MKS	Base, FWD	View 2011 MKS ›
2012	Lincoln MKS	Base, AWD	View 2012 MKS ›
2012	Lincoln MKS	Base, FWD	View 2012 MKS ›
2011	Nissan Quest	LE	View 2011 Quest ›
2011	Nissan Quest	SL	View 2011 Quest ›
2012	Nissan Quest	LE	View 2012 Quest ›