235/35R19 Tire Size in Inches

Diameter, width, sidewall and the closest equivalent sizes, computed from the size code.

235/35R19
25.5" tall × 9.3" wide
On a 19-inch wheel · roughly 25.5x9.3R19 in flotation sizing
MeasurementInchesMillimetres
Overall diameter25.48647
Section width9.25235
Sidewall height3.2482.2
Wheel diameter19483
Circumference80.02033
Revolutions per mile792 (492 per km)

What 235/35R19 means

235 is the section width in millimetres (9.3 in). 35 is the aspect ratio: the sidewall is 35% as tall as the tire is wide, which works out to 82.2 mm or 3.2 in. R19 is a radial tire for a 19-inch wheel.

Overall diameter is the wheel plus two sidewalls: 19 + 2 × 3.24 = 25.5 inches. These are the nominal dimensions every maker builds to; a real 235/35R19 can measure a few tenths of an inch differently by model and inflation.

Closest equivalent sizes

Common sizes within the usual 3% of 235/35R19's overall diameter. Confirm load index, speed rating and rim width before swapping.

SizeDiameterWidthChangeSpeedometer at 60
215/50R17 new wheels 25.5 in 8.5 in -0.0% really 60.0 mph
205/65R15 new wheels 25.5 in 8.1 in +0.1% really 60.0 mph
195/75R14 new wheels 25.5 in 7.7 in +0.2% really 60.1 mph
235/40R18 new wheels 25.4 in 9.3 in -0.3% really 59.8 mph
215/45R18 new wheels 25.6 in 8.5 in +0.6% really 60.3 mph
235/45R17 new wheels 25.3 in 9.3 in -0.6% really 59.6 mph

Speedometer if you switch to 215/50R17

Your speedometer stays calibrated for 235/35R19. With a shorter tire you travel slower than it shows.

Speedometer readsTrue speed
30 mph30.0 mph
45 mph45.0 mph
55 mph55.0 mph
65 mph65.0 mph
75 mph75.0 mph
Compare 235/35R19 with any size →

Shop 235/35R19 tires

Check the load index and speed rating on your door-jamb placard before you buy, especially for LT tires used for towing.

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Frequently Asked Questions

A 235/35R19 tire is 25.5 inches (647 mm) tall overall. That is the 19-inch wheel plus two sidewalls of 3.2 inches each (35% of the 235 mm section width). Expect a real tire to measure within a few tenths of an inch of this, depending on the model and inflation.

The section width is 235 mm, or 9.3 inches, measured sidewall to sidewall on the recommended rim width. The tread itself is narrower than that. In flotation sizing, 235/35R19 is roughly a 25.5x9.3R19.

215/50R17 is the closest common size, at -0.0% overall diameter (25.5 in against 25.5 in). Most makers treat about 3% as the limit for a swap without speedometer or clearance problems, but always confirm load index, speed rating and wheel width before changing size.

About 792 revolutions per mile (492 per kilometre), from its 25.5-inch rolling diameter. Real-world figures run slightly higher because a loaded tire squats. This number is what your speedometer and odometer are calibrated against.

Last updated: October 2, 2026

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The full calculator compares up to three sizes with speedometer error, clearance change and a to-scale diagram.

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Other 19-inch sizes

225/40R19 225/45R19 225/55R19 235/40R19 235/45R19 235/50R19 235/55R19 245/35R19 245/40R19 245/45R19 245/50R19 245/55R19 255/35R19 255/40R19 255/45R19 255/50R19 255/55R19 265/50R19 275/35R19 275/40R19 275/45R19 285/45R19 275/55R19 285/40R19