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245/55R18

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 245/55R18 tire size features an overall diameter of 28.61 inches, a section width of 9.6 inches (245mm), and rotates 705 times per mile. It is a standard factory tire fitment on 51+ vehicle models including Dodge Charger, Ford Explorer.

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Physical Dimensions & Specs

Overall Diameter

28.61"

726.7 mm

Section Width

245 mm

9.65" wide

Sidewall Height

5.31"

134.9 mm (55% aspect)

Revolutions / Mile

705

Circumference: 89.88"

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 245/55R18 against any proposed tire size below:

Popular Comparisons:
Tire 1 (Stock / Base)245/55R18
Overall Height:28.6"
Sidewall:5.3"
Revs/Mile:705
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682

Visual Tire & Wheel Comparison

Tire 128.6" HeightTire 229.6" Height

Speedometer Variance

+3.4%At 60 mph reading, actual speed is 62.0 mph
IndicatedActual SpeedDiff
20 mph20.7 mph+0.7 mph
30 mph31.0 mph+1.0 mph
45 mph46.5 mph+1.5 mph
60 mph62.0 mph+2.0 mph
75 mph77.5 mph+2.5 mph
90 mph93.0 mph+3.0 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:+0.48" ground clearance

Vehicles That Fit 245/55R18 (51+ Models)

Factory standard and optional vehicle fitments utilizing 245/55R18 tires:

YearMake & ModelTrim / VariantLookup Specs
2024Dodge ChargerDaytona R/TView 2024 Charger ›
2025Dodge ChargerDaytona R/TView 2025 Charger ›
2013Ford ExplorerPolice Interceptor, AWDView 2013 Explorer ›
2013Ford ExplorerPolice Interceptor, FWDView 2013 Explorer ›
2013Ford TaurusPolice Interceptor, 3.5L Eng VIN 8, AWDView 2013 Taurus ›
2013Ford TaurusPolice Interceptor, 3.5L Eng VIN 8, FWDView 2013 Taurus ›
2013Ford TaurusPolice Interceptor, 3.5L Eng VIN TView 2013 Taurus ›
2013Ford TaurusPolice Interceptor, 3.7L Eng VIN KView 2013 Taurus ›
2014Ford Police Interceptor Sedan3.5L Eng VIN 8, GasView 2014 Police Interceptor Sedan ›
2014Ford Police Interceptor Sedan3.5L Eng VIN 8, Gas/EthanolView 2014 Police Interceptor Sedan ›
2014Ford Police Interceptor Sedan3.5L Eng VIN TView 2014 Police Interceptor Sedan ›
2014Ford Police Interceptor Sedan3.7L Eng VIN K, GasView 2014 Police Interceptor Sedan ›
2014Ford Police Interceptor Sedan3.7L Eng VIN K, Gas/EthanolView 2014 Police Interceptor Sedan ›
2014Ford Police Interceptor Utility3.5L Eng VIN TView 2014 Police Interceptor Utility ›
2014Ford Police Interceptor Utility3.7L Eng VIN R, GasView 2014 Police Interceptor Utility ›
2014Ford Police Interceptor Utility3.7L Eng VIN R, Gas/EthanolView 2014 Police Interceptor Utility ›
2015Ford Police Interceptor Sedan3.5L Eng VIN 8, GasView 2015 Police Interceptor Sedan ›
2015Ford Police Interceptor Sedan3.5L Eng VIN 8, Gas/EthanolView 2015 Police Interceptor Sedan ›
2015Ford Police Interceptor Sedan3.5L Eng VIN TView 2015 Police Interceptor Sedan ›
2015Ford Police Interceptor Sedan3.7L Eng VIN K, GasView 2015 Police Interceptor Sedan ›
2015Ford Police Interceptor Sedan3.7L Eng VIN K, Gas/EthanolView 2015 Police Interceptor Sedan ›
2015Ford Police Interceptor Utility3.5L Eng VIN TView 2015 Police Interceptor Utility ›
2015Ford Police Interceptor Utility3.7L Eng VIN R, GasView 2015 Police Interceptor Utility ›
2015Ford Police Interceptor Utility3.7L Eng VIN R, Gas/EthanolView 2015 Police Interceptor Utility ›
2016Ford Police Interceptor Sedan3.5L Eng VIN 8, GasView 2016 Police Interceptor Sedan ›
2016Ford Police Interceptor Sedan3.5L Eng VIN 8, Gas/EthanolView 2016 Police Interceptor Sedan ›
2016Ford Police Interceptor Utility3.5L Eng VIN TView 2016 Police Interceptor Utility ›
2016Ford Police Interceptor Utility3.7L Eng VIN R, GasView 2016 Police Interceptor Utility ›
2016Ford Police Interceptor Sedan3.7L Eng VIN K, GasView 2016 Police Interceptor Sedan ›
2016Ford Police Interceptor Sedan3.5L Eng VIN TView 2016 Police Interceptor Sedan ›
2016Ford Police Interceptor Sedan3.7L Eng VIN K, Gas/EthanolView 2016 Police Interceptor Sedan ›
2016Ford Police Interceptor Utility3.7L Eng VIN R, Gas/EthanolView 2016 Police Interceptor Utility ›
2017Ford Police Interceptor Sedan3.5L Eng VIN 8, GasView 2017 Police Interceptor Sedan ›
2017Ford Police Interceptor Sedan3.5L Eng VIN 8, Gas/EthanolView 2017 Police Interceptor Sedan ›
2017Ford Police Interceptor Sedan3.5L Eng VIN TView 2017 Police Interceptor Sedan ›
2017Ford Police Interceptor Sedan3.7L Eng VIN K, GasView 2017 Police Interceptor Sedan ›
2017Ford Police Interceptor Sedan3.7L Eng VIN K, Gas/EthanolView 2017 Police Interceptor Sedan ›
2017Ford Police Interceptor Utility3.5L Eng VIN TView 2017 Police Interceptor Utility ›
2017Ford Police Interceptor Utility3.7L Eng VIN RView 2017 Police Interceptor Utility ›
2018Ford Police Interceptor Sedan3.5L Eng VIN 8View 2018 Police Interceptor Sedan ›
2018Ford Police Interceptor Sedan3.5L Eng VIN TView 2018 Police Interceptor Sedan ›
2018Ford Police Interceptor Sedan3.7L Eng VIN KView 2018 Police Interceptor Sedan ›
2018Ford Police Interceptor Utility3.5L Eng VIN TView 2018 Police Interceptor Utility ›
2018Ford Police Interceptor Utility3.7L Eng VIN RView 2018 Police Interceptor Utility ›
2019Ford Police Interceptor Sedan3.5L Eng VIN 8View 2019 Police Interceptor Sedan ›
2019Ford Police Interceptor Sedan3.5L Eng VIN TView 2019 Police Interceptor Sedan ›
2019Ford Police Interceptor Sedan3.7L Eng VIN KView 2019 Police Interceptor Sedan ›
2019Ford Police Interceptor Utility3.5L Eng VIN TView 2019 Police Interceptor Utility ›
2019Ford Police Interceptor Utility3.7L Eng VIN RView 2019 Police Interceptor Utility ›
2003Mercury MarauderMarauderView 2003 Marauder ›
2004Mercury MarauderMarauderView 2004 Marauder ›