tireheight.com

355/30R19 in inches

A 355/30R19 tire is 27.4″ tall and 14.0″ wide, and fits a 19″ wheel. In inches it is written 27.4×14.0R19.

Diameter27.39″
Width13.98″
Sidewall4.19″
355/30R19 drawn to scale: 27.39 inch diameter, 4.19 inch sidewall, 19 inch wheel, 13.98 inch tread width19″ wheel4.19″27.39″ overall13.98″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 355/30R19 tires really are

Heights published by Michelin for the one tire in this size. Their published revolutions per mile work out to 26.6″ under load (below).

The one tire listed, the Michelin Pilot Sport 4 S, measures 27.40″: 0.01″ taller than the size code's 27.39″.

Height under load26.6″

Published revs per mile (758) mean the tire rolls like a 26.6″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 355/30R19

Sort by the spec you care about.

LoadRevs/miSource
Michelin Pilot Sport 4 SPerformanceXL · 110(Y)27.4033.69.52,337758Spec page

Is 355/30R19 a 27-inch tire?

≈27″

Close. The size code works out to 27.39″, and the 1 tire here publishes 27.40″, so people call it a 27.

All 27-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 355/30R19Difference
285/35R1926.85-0.53″-1.9%
225/45R1926.97-0.41″-1.5%
255/40R1927.03-0.35″-1.3%
295/35R1927.13-0.26″-0.9%
345/30R1927.15-0.24″-0.9%
235/45R1927.33-0.06″-0.2%
265/40R1927.35-0.04″-0.1%
305/35R1927.41+0.02″+0.1%
275/40R1927.66+0.28″+1.0%
245/45R1927.68+0.30″+1.1%

How to read 355/30R19

How to read any tire size

355/30R19 110Y as printed on the tire sidewall, with each part numbered355/30R19 110Y123456
How 355/30R19 110Y is printed on the sidewall. It's the most common code among the 1 tire here; tires in this size come in other load and speed ratings too.
1355Section width

355 mm across the widest point, or 13.98 inches. Every 355 size

230Aspect ratio

A percentage, not a measurement: the sidewall is 30% as tall as the tire is wide, which is 106.5 mm or 4.19 inches.

3RConstruction

Radial construction.

419Wheel diameter

Mounts on a 19-inch wheel. Approved wheel widths run 12.0″ to 13.0″.

5110Load index

Each tire carries up to 2,337 lb (1,060 kg) at its maximum pressure.

6YSpeed rating

Rated for up to 186 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter27.39696 mm
Section width13.98355 mm
Sidewall height4.19106.5 mm
Circumference86.02,185 mm
Revolutions per mile (calculated, unloaded)736.4458 per km
Revolutions per mile (published by manufacturers)758471 per km
Approved wheel width12.0–13.0305–330 mm

Speedometer error after switching to 355/30R19

Your actual speed– mph

Questions about 355/30R19

What is 355/30R19 in inches?

27.39 inches tall, 13.98 inches wide, on a 19-inch wheel. Written in inches, that is roughly 27.4×14.0R19.

What wheel width do I need for 355/30R19?

Manufacturers approve 12.0–13.0″ wide wheels for this size.

How many revolutions per mile does a 355/30R19 make?

Published figures run 758 revolutions per mile. The calculated figure is 736.4, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 355/30R19 than 265/40R19?

0.04 inches taller on paper (27.39″ vs 27.35″), which raises the axle about 0.02″. Your speedometer will read about 0.1% slow.