tireheight.com

245/35R17 in inches

A 245/35R17 tire is 23.8″ tall and 9.6″ wide, and fits a 17″ wheel. In inches it is written 23.8×9.6R17.

Diameter23.75″
Width9.65″
Sidewall3.38″
245/35R17 drawn to scale: 23.75 inch diameter, 3.38 inch sidewall, 17 inch wheel, 9.65 inch tread width17″ wheel3.38″23.75″ overall9.65″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 245/35R17 tires really are

Heights published by Toyo for the one tire in this size. Their published revolutions per mile work out to 23.1″ under load (below).

The one tire listed, the Toyo Proxes R1R, measures 23.82″: 0.07″ taller than the size code's 23.75″.

Height under load23.1″

Published revs per mile (872) mean the tire rolls like a 23.1″ tire on the vehicle. Use this for speedometer calibration.

1 tire in 245/35R17

Sort by the spec you care about.

LoadRevs/miSource
Toyo Proxes R1RPerformanceXL · 91W23.8223.68.21,356872Spec page

Is 245/35R17 a 24-inch tire?

≈24″

Yes. The size code works out to 23.75″, and the 1 tire here publishes 23.82″, so people call it a 24.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 245/35R17Difference
205/40R1723.46-0.30″-1.2%
215/45R1623.62-0.13″-0.6%
195/50R1623.68-0.07″-0.3%
215/40R1723.77+0.02″+0.1%
195/45R1723.91+0.16″+0.7%
215/35R1823.93+0.17″+0.7%
205/45R1724.26+0.51″+2.2%
235/40R1724.40+0.65″+2.7%
215/45R1724.62+0.87″+3.6%
245/40R1724.72+0.96″+4.1%

How to read 245/35R17

How to read any tire size

245/35R17 91W as printed on the tire sidewall, with each part numbered245/35R17 91W123456
How 245/35R17 91W 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.
1245Section width

245 mm across the widest point, or 9.65 inches. Every 245 size

235Aspect ratio

A percentage, not a measurement: the sidewall is 35% as tall as the tire is wide, which is 85.8 mm or 3.38 inches.

3RConstruction

Radial construction.

417Wheel diameter

Mounts on a 17-inch wheel. Approved wheel widths run 8.0″ to 9.5″.

591Load index

Each tire carries up to 1,356 lb (615 kg) at its maximum pressure.

6WSpeed rating

Rated for up to 168 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter23.75603 mm
Section width9.65245 mm
Sidewall height3.3885.8 mm
Circumference74.61,895 mm
Revolutions per mile (calculated, unloaded)849.1528 per km
Revolutions per mile (published by manufacturers)872542 per km
Approved wheel width8.0–9.5203–241 mm

Speedometer error after switching to 245/35R17

Your actual speed– mph

Questions about 245/35R17

What is 245/35R17 in inches?

23.75 inches tall, 9.65 inches wide, on a 17-inch wheel. Written in inches, that is roughly 23.8×9.6R17.

What wheel width do I need for 245/35R17?

Manufacturers approve 8.0–9.5″ wide wheels for this size.

How many revolutions per mile does a 245/35R17 make?

Published figures run 872 revolutions per mile. The calculated figure is 849.1, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 245/35R17 than 205/40R17?

0.30 inches taller on paper (23.75″ vs 23.46″), which raises the axle about 0.15″. Your speedometer will read about 1.3% slow.