295/40R20 Tire Size in Inches

29.3" tall, 11.6" wide, 4.6" sidewall

Diameter29.3"744 mm
Overall diameter29.3"744 mm
Section width11.6"295 mm
Sidewall height4.6"118 mm
Circumference92.0"2337 mm
Revolutions per mile689428 per km
Wheel diameter20"≈ 29.3x11.6R20 in inches

A 295/40R20 tire is 29.3 inches (744 mm) tall and 11.6 inches wide. The sidewall is 40% of the width, 4.6 inches, on a 20-inch wheel, and the tire turns about 689 times per mile.

In flotation terms that is about 29.3x11.6R20. People often call it a 29-inch tire.

The size most often compared with it is 305/40R20, which is 0.3" taller (+1.1%). At an indicated 60 mph you would be doing 60.6 mph on it.

295/40R20
305/40R20
Diameter difference+1.08%diameter 29.29" → 29.61"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 295/40R20

Same 20" wheel, within 20 mm of width and 10 points of aspect ratio.

SizeDiameterWidthSidewallvs 295/40R20
305/40R2029.6"12.0"4.8"+1.1%
315/35R2028.7"12.4"4.3"−2.1%
315/40R2029.9"12.4"5.0"+2.2%
295/45R2030.5"11.6"5.2"+4.0%
295/35R2028.1"11.6"4.1"−4.0%
285/35R2027.9"11.2"3.9"−4.9%
305/45R2030.8"12.0"5.4"+5.2%
275/50R2030.8"10.8"5.4"+5.2%
275/35R2027.6"10.8"3.8"−5.8%
315/45R2031.2"12.4"5.6"+6.4%

Same height on a different wheel

Sizes within 2% of 29.3" on 18" or 22" wheels.

SizeDiameterWidthSidewallvs 295/40R20
285/50R1829.2"11.2"5.6"−0.2%
305/30R2229.2"12.0"3.6"−0.3%
315/30R2229.4"12.4"3.7"+0.5%
265/55R1829.5"10.4"5.7"+0.6%
255/35R2229.0"10.0"3.5"−0.9%
295/30R2229.0"11.6"3.5"−1.1%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 295/40R20.

Speedometer showson 305/40R20on 315/35R20on 315/40R20
30 mph30.3 mph29.4 mph30.6 mph
45 mph45.5 mph44.1 mph46.0 mph
60 mph60.6 mph58.8 mph61.3 mph
70 mph70.8 mph68.5 mph71.5 mph

295/40R20 FAQ

How tall is a 295/40R20 tire?

29.3 inches (744 mm). The sidewall is 4.6 inches.

How wide is a 295/40R20 tire?

11.6 inches (295 mm) section width, measured sidewall to sidewall.

What is 295/40R20 in flotation size?

About 29.3x11.6R20.

Can I use 305/40R20 instead of 295/40R20?

305/40R20 is +1.1% in diameter, within the common 3% guideline. It is 0.4" wider.