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305/35R24 in inches

A 305/35R24 tire is 32.4″ tall and 12.0″ wide, and fits a 24″ wheel. In inches it is written 32.4×12.0R24.

Diameter32.41″
Width12.01″
Sidewall4.20″
305/35R24 drawn to scale: 32.41 inch diameter, 4.20 inch sidewall, 24 inch wheel, 12.01 inch tread width24″ wheel4.20″32.41″ overall12.01″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 305/35R24 tires really are

Heights published by General and Toyo for all 2 tires in this size. Their published revolutions per mile work out to 31.5″ under load (below).

Real 305/35R24 tires measure 32.40–32.44″, against 32.41″ from the size code. They run both taller and shorter than the size code.

Height under load31.5″

Published revs per mile (640–641) mean the tire rolls like a 31.5″ tire on the vehicle. Use this for speedometer calibration.

Weight spread38.3–44.5 lb

The lightest (General G-MAX AS07, XL) is 6.2 lb lighter per corner than the heaviest (Toyo Proxes ST III, XL).

2 tires in 305/35R24

Sort by the spec you care about.

LoadRevs/miSource
General G-MAX AS07PerformanceXL · 112V32.4038.311.02,469641Spec page
Toyo Proxes ST IIIPerformanceXL · 112W32.4444.510.12,469640Spec page

Is 305/35R24 a 32-inch tire?

≈32″

Close. The size code works out to 32.41″, and the 2 tires here publish 32.40–32.44″, so people call it a 32.

All 32-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 305/35R24Difference
285/35R2330.85-1.55″-4.8%
335/30R2330.91-1.49″-4.6%
295/30R2430.97-1.44″-4.4%
295/35R2331.13-1.28″-3.9%
285/35R2431.85-0.55″-1.7%
325/35R2331.96-0.45″-1.4%
285/40R2331.98-0.43″-1.3%
295/35R2432.13-0.28″-0.9%
305/40R2332.61+0.20″+0.6%
285/40R2432.98+0.57″+1.8%

How to read 305/35R24

How to read any tire size

305/35R24 112V as printed on the tire sidewall, with each part numbered305/35R24 112V123456
How 305/35R24 112V 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.
1305Section width

305 mm across the widest point, or 12.01 inches. Every 305 size

235Aspect ratio

A percentage, not a measurement: the sidewall is 35% as tall as the tire is wide, which is 106.8 mm or 4.20 inches.

3RConstruction

Radial construction.

424Wheel diameter

Mounts on a 24-inch wheel. Approved wheel widths run 10.0″ to 12.0″.

5112Load index

Each tire carries up to 2,469 lb (1,120 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter32.41823 mm
Section width12.01305 mm
Sidewall height4.20106.8 mm
Circumference101.82,586 mm
Revolutions per mile (calculated, unloaded)622.4387 per km
Revolutions per mile (published by manufacturers)640–641398 per km
Approved wheel width10.0–12.0254–305 mm

Speedometer error after switching to 305/35R24

Your actual speed– mph

Questions about 305/35R24

What is 305/35R24 in inches?

32.41 inches tall, 12.01 inches wide, on a 24-inch wheel. Written in inches, that is roughly 32.4×12.0R24.

How much does a 305/35R24 tire weigh?

Between 38.3 lb and 44.5 lb for the 2 tires listed here. The lightest is the General G-MAX AS07 (XL); the heaviest is the Toyo Proxes ST III (XL).

What wheel width do I need for 305/35R24?

Manufacturers approve 10.0–12.0″ wide wheels for this size.

How many revolutions per mile does a 305/35R24 make?

Published figures run 640–641 revolutions per mile. The calculated figure is 622.4, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 305/35R24 than 295/35R24?

0.28 inches taller on paper (32.41″ vs 32.13″), which raises the axle about 0.14″. Your speedometer will read about 0.9% slow.