225/55R19 in inches

A 225/55R19 tire is 28.7″ tall and 8.9″ wide, and fits a 19″ wheel. In inches it is written 28.7×8.9R19.

Diameter28.74″

Width8.86″

Sidewall4.87″

Drawn to scale. Nominal dimensions calculated from the size code.

Manufacturer data

How tall 225/55R19 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 19 tires in this size. Their published revolutions per mile work out to 27.9″ under load (below).

Real 225/55R19 tires measure 28.70–28.80″, against 28.74″ from the size code. Most run taller than the size code (15 of 19).

Height under load27.9″

Published revs per mile (722–723) mean the tire rolls like a 27.9″ tire on the vehicle. Use this for speedometer calibration.

Weight spread26.4–32.8 lb

The lightest (General AltiMAX RT45, SL) is 6.4 lb lighter per corner than the heaviest (Toyo OPEN COUNTRY Q/T, SL).

19 tires in 225/55R19

Sort by the spec you care about.

	Load					Revs/mi	Source
General AltiMAX RT45Touring	SL · 99H	28.70	26.4	11.0	1,709	723	Spec page
General AltiMAX365 AWTouring	SL · 99H	28.70	26.4	11.0	1,709	723	Spec page
Michelin Pilot Sport 4 SUVPerformance	SL · 99V	28.80	27.2	9.5	1,709	723	Spec page
General AltiMAX Arctic XWinter	XL · 103T	28.70	27.6	12.0	1,929	723	Spec page
Michelin Defender2All-season	XL · 103V	28.78	27.8	10.5	1,929	723	Spec page
Michelin CrossClimate2All-season	XL · 103V	28.80	27.9	10.0	1,929	723	Spec page
Michelin Primacy Tour A/STouring	SL · 99V	28.80	27.9	9.0	1,709	723	Spec page
Michelin X-Ice SnowWinter	XL · 103T	28.78	28.1	10.5	1,929	723	Spec page
Michelin X-Ice Snow+Winter	XL · 103H	28.78	28.1	10.5	1,929	723	Spec page
Michelin Primacy All SeasonTouring	XL · 103H	28.80	28.9	8.5	1,929	723	Spec page
Michelin Pilot Sport All-Season 4Performance	XL · 103Y	28.80	29.1	10.0	1,929	723	Spec page
Michelin Pilot Sport 4Performance	XL · 103Y	28.80	29.3	9.5	1,929	723	Spec page
Toyo Celsius IITouring	SL · 99V	28.78	29.7	11.1	1,709	722	Spec page
Toyo Extensa A/S IIAll-season	XL · 103V	28.78	29.8	10.6	1,929	722	Spec page
Toyo Proxes G-Tour	XL · 103V	28.80	29.8	11.7	1,929	722	Spec page
Toyo Observe G3-IceWinter	SL · 99T	28.78	30.0	12.0	1,709	722	Spec page
General Grabber H/THighway	SL · 99V	28.70	30.3	11.0	1,709	723	Spec page
BFGoodrich Advantage ControlAll-season	SL · 99V	28.78	30.7	10.5	1,709	723	Spec page
Toyo OPEN COUNTRY Q/TAll-season	SL · 99V	28.78	32.8	11.8	1,709	722	Spec page

Is 225/55R19 a 29-inch tire?

≈29″

Yes. The size code works out to 28.74″, and the 19 tires here publish 28.70–28.80″, so people call it a 29.

All 29-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 225/55R19	Difference
255/45R19	28.04	-0.71″	-2.5%
235/50R19	28.25	-0.49″	-1.7%
295/40R19	28.29	-0.45″	-1.6%
265/45R19	28.39	-0.35″	-1.2%
245/50R19	28.65	-0.10″	-0.3%
275/45R19	28.74	0.00″	0.0%
255/50R19	29.04	+0.30″	+1.0%
285/45R19	29.10	+0.35″	+1.2%
235/55R19	29.18	+0.43″	+1.5%
265/50R19	29.43	+0.69″	+2.4%

How to read 225/55R19

How to read any tire size

How 225/55R19 99V is printed on the sidewall. It's the most common code among the 19 tires here (5 of them); tires in this size come in other load and speed ratings too.

1225Section width

225 mm across the widest point, or 8.86 inches. Every 225 size

255Aspect ratio

A percentage, not a measurement: the sidewall is 55% as tall as the tire is wide, which is 123.8 mm or 4.87 inches.

3RConstruction

Radial construction.

419Wheel diameter

Mounts on a 19-inch wheel. Approved wheel widths run 6.0″ to 8.0″.

599Load index

Each tire carries up to 1,709 lb (775 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

Specification	Inches	Metric
Overall diameter	28.74	730 mm
Section width	8.86	225 mm
Sidewall height	4.87	123.8 mm
Circumference	90.3	2,294 mm
Revolutions per mile (calculated, unloaded)	701.6	436 per km
Revolutions per mile (published by manufacturers)	722–723	449 per km
Approved wheel width	6.0–8.0	152–203 mm

Speedometer error after switching to 225/55R19

Your actual speed– mph

Questions about 225/55R19

What is 225/55R19 in inches?

28.74 inches tall, 8.86 inches wide, on a 19-inch wheel. Written in inches, that is roughly 28.7×8.9R19.

How much does a 225/55R19 tire weigh?

Between 26.4 lb and 32.8 lb for the 19 tires listed here. The lightest is the General AltiMAX RT45 (SL); the heaviest is the Toyo OPEN COUNTRY Q/T (SL).

What wheel width do I need for 225/55R19?

Manufacturers approve 6.0–8.0″ wide wheels for this size.

How many revolutions per mile does a 225/55R19 make?

Published figures run 722–723 revolutions per mile. The calculated figure is 701.6, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 225/55R19 than 245/50R19?

0.10 inches taller on paper (28.74″ vs 28.65″), which raises the axle about 0.05″. Your speedometer will read about 0.3% slow.