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P245/50R18

Passenger / P-Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The P245/50R18 tire size features an overall diameter of 27.65 inches, a section width of 9.6 inches (245mm), and rotates 730 times per mile. It is a standard factory tire fitment on 81+ vehicle models including Buick Lucerne.

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Physical Dimensions & Specs

Overall Diameter

27.65"

702.3 mm

Section Width

245 mm

9.65" wide

Sidewall Height

4.82"

122.4 mm (50% aspect)

Revolutions / Mile

730

Circumference: 86.85"

Rim Diameter

18"

Wheel size

Recommended Rim Width

6.1" - 8.6"

Optimal rim width range

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Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare P245/50R18 against any proposed tire size below:

Popular Comparisons:
Tire 1 (Stock / Base)245/50R18
Overall Height:27.6"
Sidewall:4.8"
Revs/Mile:730
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682

Visual Tire & Wheel Comparison

Tire 127.6" HeightTire 229.6" Height

Speedometer Variance

+7.0%At 60 mph reading, actual speed is 64.2 mph
IndicatedActual SpeedDiff
20 mph21.4 mph+1.4 mph
30 mph32.1 mph+2.1 mph
45 mph48.1 mph+3.1 mph
60 mph64.2 mph+4.2 mph
75 mph80.2 mph+5.2 mph
90 mph96.3 mph+6.3 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:+0.96" ground clearance

Vehicles That Fit P245/50R18 (81+ Models)

Factory standard and optional vehicle fitments utilizing P245/50R18 tires:

YearMake & ModelTrim / VariantLookup Specs
2006Buick LucerneCXSView 2006 Lucerne ›
2007Buick LucerneCXSView 2007 Lucerne ›
2008Buick LucerneCXSView 2008 Lucerne ›
2008Buick LucerneSuperView 2008 Lucerne ›
2009Buick LucerneSuperView 2009 Lucerne ›
2010Buick LucerneSuperView 2010 Lucerne ›
2011Buick LucerneSuperView 2011 Lucerne ›
2006Cadillac DTS4.6 9View 2006 DTS ›
2006Cadillac DTS4.6 YView 2006 DTS ›
2007Cadillac DTS4.6 9View 2007 DTS ›
2007Cadillac DTS4.6 YView 2007 DTS ›
2008Cadillac DTS4.6 9View 2008 DTS ›
2008Cadillac DTS4.6 YView 2008 DTS ›
2009Cadillac DTS4.6 9View 2009 DTS ›
2009Cadillac DTS4.6 YView 2009 DTS ›
2010Cadillac DTS4.6 9View 2010 DTS ›
2010Cadillac DTS4.6 YView 2010 DTS ›
2011Cadillac DTS4.6 6View 2011 DTS ›
2011Cadillac DTS4.6 SView 2011 DTS ›
2011Infiniti M37BaseView 2011 M37 ›
2011Infiniti M37xView 2011 M37 ›
2011Infiniti M56BaseView 2011 M56 ›
2011Infiniti M56xView 2011 M56 ›
2012Infiniti M37xView 2012 M37 ›
2012Infiniti M37BaseView 2012 M37 ›
2012Infiniti M35hM35hView 2012 M35h ›
2013Infiniti M37BaseView 2013 M37 ›
2013Infiniti M37xView 2013 M37 ›
2013Infiniti M56BaseView 2013 M56 ›
2013Infiniti M56xView 2013 M56 ›
2013Infiniti M35hM35hView 2013 M35h ›
2014Infiniti Q705.6, AWDView 2014 Q70 ›
2014Infiniti Q703.7, RWDView 2014 Q70 ›
2014Infiniti Q703.7, AWDView 2014 Q70 ›
2014Infiniti Q70HybridView 2014 Q70 ›
2014Infiniti Q705.6, RWDView 2014 Q70 ›
2015Infiniti Q703.7, AWDView 2015 Q70 ›
2015Infiniti Q703.7, RWDView 2015 Q70 ›
2015Infiniti Q705.6, AWDView 2015 Q70 ›
2015Infiniti Q705.6, RWDView 2015 Q70 ›
2015Infiniti Q70HybridView 2015 Q70 ›
2015Infiniti Q70L3.7, AWDView 2015 Q70L ›
2015Infiniti Q70L3.7, RWDView 2015 Q70L ›
2015Infiniti Q70L5.6, AWDView 2015 Q70L ›
2015Infiniti Q70L5.6, RWDView 2015 Q70L ›
2016Infiniti Q703.7, AWDView 2016 Q70 ›
2016Infiniti Q70HybridView 2016 Q70 ›
2016Infiniti Q70L3.7, RWDView 2016 Q70L ›
2016Infiniti Q705.6, RWDView 2016 Q70 ›
2016Infiniti Q70L3.7, AWDView 2016 Q70L ›
2016Infiniti Q705.6, AWDView 2016 Q70 ›
2016Infiniti Q70L5.6, RWDView 2016 Q70L ›
2016Infiniti Q70L5.6, AWDView 2016 Q70L ›
2016Infiniti Q703.7, RWDView 2016 Q70 ›
2017Infiniti Q703.7, AWDView 2017 Q70 ›
2017Infiniti Q703.7, RWDView 2017 Q70 ›
2017Infiniti Q705.6, AWDView 2017 Q70 ›
2017Infiniti Q705.6, RWDView 2017 Q70 ›
2017Infiniti Q70HybridView 2017 Q70 ›
2017Infiniti Q70L3.7, RWDView 2017 Q70L ›
2017Infiniti Q70L3.7, AWDView 2017 Q70L ›
2017Infiniti Q70L5.6, AWDView 2017 Q70L ›
2017Infiniti Q70L5.6, RWDView 2017 Q70L ›
2018Infiniti Q703.7 Luxe, RWDView 2018 Q70 ›
2018Infiniti Q705.6 Luxe, AWDView 2018 Q70 ›
2018Infiniti Q703.7 Luxe, AWDView 2018 Q70 ›
2018Infiniti Q705.6 Luxe, RWDView 2018 Q70 ›
2018Infiniti Q70Hybrid LuxeView 2018 Q70 ›
2018Infiniti Q70L3.7 Luxe, RWDView 2018 Q70L ›
2018Infiniti Q70L3.7 Luxe, AWDView 2018 Q70L ›
2018Infiniti Q70L5.6 Luxe, AWDView 2018 Q70L ›
2018Infiniti Q70L5.6 Luxe, RWDView 2018 Q70L ›
2019Infiniti Q705.6 Luxe, RWDView 2019 Q70 ›
2019Infiniti Q705.6 Luxe, AWDView 2019 Q70 ›
2019Infiniti Q70L3.7 Luxe, RWDView 2019 Q70L ›
2019Infiniti Q70L5.6 Luxe, RWDView 2019 Q70L ›
2019Infiniti Q70L3.7 Luxe, AWDView 2019 Q70L ›
2019Infiniti Q70L5.6 Luxe, AWDView 2019 Q70L ›
2016Kia K900V6View 2016 K900 ›
2017Kia K900V6 PremiumView 2017 K900 ›
2017Kia K900V6 LuxuryView 2017 K900 ›