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255/35R22 in inches

A 255/35R22 tire is 29.0″ tall and 10.0″ wide, and fits a 22″ wheel. In inches it is written 29.0×10.0R22.

Diameter29.03″
Width10.04″
Sidewall3.51″
255/35R22 drawn to scale: 29.03 inch diameter, 3.51 inch sidewall, 22 inch wheel, 10.04 inch tread width22″ wheel3.51″29.03″ overall10.04″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 255/35R22 tires really are

Heights published by Michelin for all 2 tires in this size. Their published revolutions per mile work out to 28.1″ under load (below).

Real 255/35R22 tires measure 29.00–29.02″, against 29.03″ from the size code. They run both taller and shorter than the size code.

Height under load28.1″

Published revs per mile (717) mean the tire rolls like a 28.1″ tire on the vehicle. Use this for speedometer calibration.

Weight spread27.1–30.9 lb

The lightest (Michelin Pilot Sport 4 S, XL) is 3.8 lb lighter per corner than the heaviest (Michelin Pilot Alpin 5, XL).

2 tires in 255/35R22

Sort by the spec you care about.

LoadRevs/miSource
Michelin Pilot Sport 4 SPerformanceXL · 99(Y)29.0027.19.01,709717Spec page
Michelin Pilot Alpin 5WinterXL · 99W29.0230.910.51,709717Spec page

Is 255/35R22 a 29-inch tire?

≈29″

Yes. The size code works out to 29.03″, and the 2 tires here publish 29.00–29.02″, 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.

SizeDiameter ″vs 255/35R22Difference
265/30R2228.26-0.77″-2.6%
335/25R2228.59-0.43″-1.5%
285/30R2228.73-0.30″-1.0%
295/30R2228.97-0.06″-0.2%
225/45R2128.97-0.06″-0.2%
255/40R2129.03+0.00″+0.0%
305/30R2229.20+0.18″+0.6%
265/35R2229.30+0.28″+0.9%
315/30R2229.44+0.41″+1.4%
275/35R2229.58+0.55″+1.9%

How to read 255/35R22

How to read any tire size

255/35R22 99W as printed on the tire sidewall, with each part numbered255/35R22 99W123456
How 255/35R22 99W is printed on the sidewall. It's the most common code among the 2 tires here (1 of them); tires in this size come in other load and speed ratings too.
1255Section width

255 mm across the widest point, or 10.04 inches. Every 255 size

235Aspect ratio

A percentage, not a measurement: the sidewall is 35% as tall as the tire is wide, which is 89.3 mm or 3.51 inches.

3RConstruction

Radial construction.

422Wheel diameter

Mounts on a 22-inch wheel. Approved wheel widths run 8.5″ to 10.0″.

599Load index

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

6WSpeed rating

Rated for up to 168 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter29.03737 mm
Section width10.04255 mm
Sidewall height3.5189.3 mm
Circumference91.22,316 mm
Revolutions per mile (calculated, unloaded)694.8432 per km
Revolutions per mile (published by manufacturers)717446 per km
Approved wheel width8.5–10.0216–254 mm

Speedometer error after switching to 255/35R22

Your actual speed– mph

Questions about 255/35R22

What is 255/35R22 in inches?

29.03 inches tall, 10.04 inches wide, on a 22-inch wheel. Written in inches, that is roughly 29.0×10.0R22.

How much does a 255/35R22 tire weigh?

Between 27.1 lb and 30.9 lb for the 2 tires listed here. The lightest is the Michelin Pilot Sport 4 S (XL); the heaviest is the Michelin Pilot Alpin 5 (XL).

What wheel width do I need for 255/35R22?

Manufacturers approve 8.5–10.0″ wide wheels for this size.

How many revolutions per mile does a 255/35R22 make?

Published figures run 717 revolutions per mile. The calculated figure is 694.8, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 255/35R22 than 295/30R22?

0.06 inches taller on paper (29.03″ vs 28.97″), which raises the axle about 0.03″. Your speedometer will read about 0.2% slow.