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P255/55R18

Passenger / P-Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The P255/55R18 tire size features an overall diameter of 29.04 inches, a section width of 10.0 inches (255mm), and rotates 694 times per mile. It is a standard factory tire fitment on 60+ vehicle models including Acura MDX.

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Physical Dimensions & Specs

Overall Diameter

29.04"

737.6 mm

Section Width

255 mm

10.04" wide

Sidewall Height

5.52"

140.2 mm (55% aspect)

Revolutions / Mile

694

Circumference: 91.24"

Rim Diameter

18"

Wheel size

Recommended Rim Width

6.4" - 8.9"

Optimal rim width range

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Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare P255/55R18 against any proposed tire size below:

Popular Comparisons:
Tire 1 (Stock / Base)255/55R18
Overall Height:29.0"
Sidewall:5.5"
Revs/Mile:694
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682

Visual Tire & Wheel Comparison

Tire 129.0" HeightTire 229.6" Height

Speedometer Variance

+1.8%At 60 mph reading, actual speed is 61.1 mph
IndicatedActual SpeedDiff
20 mph20.4 mph+0.4 mph
30 mph30.5 mph+0.5 mph
45 mph45.8 mph+0.8 mph
60 mph61.1 mph+1.1 mph
75 mph76.4 mph+1.4 mph
90 mph91.6 mph+1.6 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:+0.27" ground clearance

Vehicles That Fit P255/55R18 (60+ Models)

Factory standard and optional vehicle fitments utilizing P255/55R18 tires:

YearMake & ModelTrim / VariantLookup Specs
2007Acura MDXMDXView 2007 MDX ›
2008Acura MDXMDXView 2008 MDX ›
2009Acura MDXMDXView 2009 MDX ›
2010Acura MDXMDXView 2010 MDX ›
2011Acura MDXMDXView 2011 MDX ›
2004Cadillac SRX4.6 A, AWDView 2004 SRX ›
2004Cadillac SRX4.6 A, RWDView 2004 SRX ›
2005Cadillac SRX3.6 7, AWDView 2005 SRX ›
2005Cadillac SRX4.6 A, AWDView 2005 SRX ›
2005Cadillac SRX3.6 7, RWDView 2005 SRX ›
2005Cadillac SRX4.6 A, RWDView 2005 SRX ›
2006Cadillac SRX4.6 A, AWDView 2006 SRX ›
2006Cadillac SRX3.6 7, RWDView 2006 SRX ›
2006Cadillac SRX3.6 7, AWDView 2006 SRX ›
2006Cadillac SRX4.6 A, RWDView 2006 SRX ›
2007Cadillac SRX4.6 A, RWDView 2007 SRX ›
2007Cadillac SRX3.6 7, RWDView 2007 SRX ›
2007Cadillac SRX4.6 A, AWDView 2007 SRX ›
2007Cadillac SRX3.6 7, AWDView 2007 SRX ›
2008Cadillac SRX3.6 7, AWDView 2008 SRX ›
2008Cadillac SRX3.6 7, RWDView 2008 SRX ›
2008Cadillac SRX4.6 A, AWDView 2008 SRX ›
2008Cadillac SRX4.6 A, RWDView 2008 SRX ›
2009Cadillac SRX3.6 7, AWDView 2009 SRX ›
2009Cadillac SRX3.6 7, RWDView 2009 SRX ›
2009Cadillac SRX4.6 A, AWDView 2009 SRX ›
2009Cadillac SRX4.6 A, RWDView 2009 SRX ›
2010Mitsubishi EndeavorSE, FWDView 2010 Endeavor ›
2010Mitsubishi EndeavorSE, AWDView 2010 Endeavor ›
2011Mitsubishi EndeavorSE, AWDView 2011 Endeavor ›
2011Mitsubishi EndeavorSE, FWDView 2011 Endeavor ›
2005Saab 9-7XLinearView 2005 9-7X ›
2005Saab 9-7XArcView 2005 9-7X ›
2006Saab 9-7X4.2iView 2006 9-7X ›
2006Saab 9-7X5.3iView 2006 9-7X ›
2007Saab 9-7X4.2iView 2007 9-7X ›
2007Saab 9-7X5.3iView 2007 9-7X ›
2008Saab 9-7X5.3iView 2008 9-7X ›
2008Saab 9-7X4.2iView 2008 9-7X ›
2009Saab 9-7X4.2iView 2009 9-7X ›
2009Saab 9-7X5.3iView 2009 9-7X ›
2006Subaru B9 TribecaBaseView 2006 B9 Tribeca ›
2006Subaru B9 TribecaLimitedView 2006 B9 Tribeca ›
2007Subaru B9 TribecaBaseView 2007 B9 Tribeca ›
2007Subaru B9 TribecaLimitedView 2007 B9 Tribeca ›
2008Subaru TribecaBaseView 2008 Tribeca ›
2008Subaru TribecaLimitedView 2008 Tribeca ›
2009Subaru TribecaBaseView 2009 Tribeca ›
2009Subaru TribecaLimitedView 2009 Tribeca ›
2010Subaru TribecaLimitedView 2010 Tribeca ›
2010Subaru TribecaPremiumView 2010 Tribeca ›
2010Subaru TribecaTouringView 2010 Tribeca ›
2011Subaru TribecaTouringView 2011 Tribeca ›
2011Subaru TribecaLimitedView 2011 Tribeca ›
2011Subaru TribecaPremiumView 2011 Tribeca ›
2012Subaru TribecaLimitedView 2012 Tribeca ›
2012Subaru TribecaTouringView 2012 Tribeca ›
2012Subaru TribecaPremiumView 2012 Tribeca ›
2013Subaru TribecaTribecaView 2013 Tribeca ›
2014Subaru TribecaTribecaView 2014 Tribeca ›