245/35R20 in inches

A 245/35R20 tire is 26.8″ tall and 9.6″ wide, and fits a 20″ wheel. In inches it is written 26.8×9.6R20.

Diameter26.75″

Width9.65″

Sidewall3.38″

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

Manufacturer data

How tall 245/35R20 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 37 tires in this size. Their published revolutions per mile work out to 26.0″ under load (below).

Real 245/35R20 tires measure 26.77–26.80″, against 26.75″ from the size code. Most run taller than the size code (28 of 37).

Height under load26.0″

Published revs per mile (776–777) mean the tire rolls like a 26.0″ tire on the vehicle. Use this for speedometer calibration.

Weight spread21.5–29.0 lb

The lightest (Michelin Pilot Sport Cup 2 R, XL) is 7.5 lb lighter per corner than the heaviest (BFGoodrich g-Force COMP-2 A/S PLUS, XL).

37 tires in 245/35R20

Sort by the spec you care about.

	Load					Revs/mi	Source
Michelin Pilot Sport Cup 2 RPerformance	XL · 95(Y)	26.80	21.5	5.5	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	22.2	9.0	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	22.6	9.0	1,521	777	Spec page
Michelin Pilot Sport Cup 2 ConnectPerformance	XL · 95(Y)	26.80	22.8	7.2	1,521	777	Spec page
Michelin Pilot Super SportPerformance	XL · 95Y	26.80	22.9	9.0	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	23.1	9.0	1,521	777	Spec page
Michelin Pilot Sport Cup 2 RPerformance	XL · 95(Y)	26.80	23.1	5.5	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	23.2	9.5	1,521	777	Spec page
Michelin Pilot Sport Cup 2 RPerformance	XL · 95(Y)	26.80	23.2	5.5	1,521	777	Spec page
Michelin Pilot Sport Cup 2 RPerformance	XL · 95(Y)	26.80	23.3	5.5	1,521	777	Spec page
Michelin Pilot Sport 4Performance	XL · 95Y	26.80	23.4	9.5	1,521	777	Spec page
Michelin Pilot Sport Cup 2Performance	XL · 95(Y)	26.80	23.4	7.2	1,521	777	Spec page
Michelin Pilot Super SportPerformance	XL · 95(Y)	26.80	23.4	9.0	1,521	777	Spec page
Michelin Pilot Sport Cup 2 ConnectPerformance	XL · 95(Y)	26.80	23.7	7.2	1,521	777	Spec page
Michelin Pilot Sport 4Performance	XL · 95W	26.80	23.8	9.0	1,521	777	Spec page
Michelin Pilot Alpin PA4Winter	XL · 95W	26.77	23.9	10.5	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	23.9	9.5	1,521	777	Spec page
Michelin Pilot Sport Cup 2 ConnectPerformance	XL · 95(Y)	26.80	23.9	7.2	1,521	777	Spec page
Michelin Pilot Alpin 5Winter	XL · 95V	26.77	24.0	9.5	1,521	777	Spec page
Michelin Pilot Alpin 5Winter	XL · 95V	26.77	24.0	9.5	1,521	777	Spec page
Michelin Pilot Sport Cup 2Performance	XL · 95(Y)	26.80	24.0	7.2	1,521	777	Spec page
Toyo Proxes Sport 2Performance	XL · 95(Y)	26.80	24.0	9.1	1,521	776	Spec page
Toyo Extensa HP IIPerformance	XL · 95W	26.77	24.3	9.6	1,521	776	Spec page
Michelin Pilot Sport Cup 2Performance	XL · 95(Y)	26.80	24.3	7.2	1,521	777	Spec page
General G-MAX AS07Performance	XL · 95W	26.80	24.4	10.0	1,521	777	Spec page
Michelin Pilot Alpin 5Winter	XL · 95V	26.77	24.5	9.5	1,521	777	Spec page
Michelin Pilot Alpin 5Winter	XL · 95V	26.77	24.5	9.5	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	24.5	9.0	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	24.6	9.0	1,521	777	Spec page
Michelin Pilot Sport All-Season 4Performance	XL · 95Y	26.80	24.8	10.0	1,521	777	Spec page
Michelin Pilot Sport 4 SPerformance	XL · 95(Y)	26.80	25.0	9.5	1,521	777	Spec page
Michelin Pilot Alpin PA4Winter	SL · 91V	26.77	25.6	10.5	1,356	777	Spec page
Toyo Proxes Sport A/SPerformance	XL · 95Y	26.77	25.7	9.3	1,521	776	Spec page
Michelin Pilot Sport 3Performance	XL · 95Y	26.80	27.1	9.0	1,499	777	Spec page
BFGoodrich g-Force Phenom T/APerformance	XL · 95W	26.77	27.3	9.0	1,521	777	Spec page
Michelin Pilot Sport 3Performance	XL · 95Y	26.80	27.7	9.0	1,521	777	Spec page
BFGoodrich g-Force COMP-2 A/S PLUSPerformance	XL · 95W	26.77	29.0	9.0	1,521	777	Spec page

Is 245/35R20 a 27-inch tire?

≈27″

Yes. The size code works out to 26.75″, and the 37 tires here publish 26.77–26.80″, 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.

Size	Diameter ″	vs 245/35R20	Difference
265/30R20	26.26	-0.49″	-1.8%
325/25R20	26.40	-0.35″	-1.3%
235/35R20	26.48	-0.28″	-1.0%
275/30R20	26.50	-0.26″	-1.0%
335/25R20	26.59	-0.16″	-0.6%
285/30R20	26.73	-0.02″	-0.1%
295/30R20	26.97	+0.22″	+0.8%
255/35R20	27.03	+0.28″	+1.0%
225/40R20	27.09	+0.33″	+1.3%
305/30R20	27.20	+0.45″	+1.7%

How to read 245/35R20

How to read any tire size

How 245/35R20 95Y is printed on the sidewall. It's the most common code among the 37 tires here (20 of them); 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.

420Wheel diameter

Mounts on a 20-inch wheel. Approved wheel widths run 8.0″ to 9.5″.

595Load index

Each tire carries up to 1,521 lb (690 kg) at its maximum pressure.

6YSpeed rating

Rated for up to 186 mph sustained.

XLExtra load

Printed after the size. In this size the XL tires carry up to 1,521 lb each and the standard-load tires up to 1,356 lb, as published.

Specification	Inches	Metric
Overall diameter	26.75	680 mm
Section width	9.65	245 mm
Sidewall height	3.38	85.8 mm
Circumference	84.0	2,135 mm
Revolutions per mile (calculated, unloaded)	753.9	468 per km
Revolutions per mile (published by manufacturers)	776–777	482–483 per km
Approved wheel width	8.0–9.5	203–241 mm

Speedometer error after switching to 245/35R20

Your actual speed– mph

Questions about 245/35R20

What is 245/35R20 in inches?

26.75 inches tall, 9.65 inches wide, on a 20-inch wheel. Written in inches, that is roughly 26.8×9.6R20.

How much does a 245/35R20 tire weigh?

Between 21.5 lb and 29.0 lb for the 37 tires listed here. The lightest is the Michelin Pilot Sport Cup 2 R (XL); the heaviest is the BFGoodrich g-Force COMP-2 A/S PLUS (XL).

What wheel width do I need for 245/35R20?

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

How many revolutions per mile does a 245/35R20 make?

Published figures run 776–777 revolutions per mile. The calculated figure is 753.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 245/35R20 than 285/30R20?

0.02 inches taller on paper (26.75″ vs 26.73″), which raises the axle about 0.01″. Your speedometer will read about 0.1% slow.