What is the diameter of a 275/30R19 tire?

A 275/30R19 tire has an overall diameter of 25.5 inches (647.7mm).

How many revolutions per mile does a 275/30R19 tire make?

A 275/30R19 tire makes approximately 791 revolutions per mile.

What rim width is recommended for 275/30R19 tires?

The recommended wheel rim width for a 275/30R19 tire is 6.9" - 9.6".

275/30R19

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 275/30R19 tire size features an overall diameter of 25.5 inches, a section width of 10.8 inches (275mm), and rotates 791 times per mile. It is a standard factory tire fitment on 8+ vehicle models including BMW 550i.

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Physical Dimensions & Specs

Overall Diameter

25.5"

647.7 mm

Section Width

275 mm

10.83" wide

Sidewall Height

3.25"

82.5 mm (30% aspect)

Revolutions / Mile

791

Circumference: 80.1"

Rim Diameter

19"

Wheel size

Recommended Rim Width

6.9" - 9.6"

Optimal rim width range

Where to Buy & Install 275/30R19 Tires

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Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 275/30R19 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)275/30R19

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:25.5"

Sidewall:3.2"

Revs/Mile:791

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

+16.0%At 60 mph reading, actual speed is 69.6 mph

Indicated	Actual Speed	Diff
20 mph	23.2 mph	+3.2 mph
30 mph	34.8 mph	+4.8 mph
45 mph	52.2 mph	+7.2 mph
60 mph	69.6 mph	+9.6 mph
75 mph	87.0 mph	+12.0 mph
90 mph	104.4 mph	+14.4 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:+2.04" ground clearance

Vehicles That Fit 275/30R19 (8+ Models)

Factory standard and optional vehicle fitments utilizing 275/30R19 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2008	BMW 550i	Standard, GS653BZ (SMG)	View 2008 550i ›
2008	BMW 550i	Standard, GS653BZ	View 2008 550i ›
2008	BMW 550i	Automatic	View 2008 550i ›
2009	BMW 550i	Automatic	View 2009 550i ›
2009	BMW 550i	Standard, GS653BZ	View 2009 550i ›
2009	BMW 550i	Standard, GS653BZ (SMG)	View 2009 550i ›
2010	BMW 550i	Automatic	View 2010 550i ›
2010	BMW 550i	Standard	View 2010 550i ›