Tire Size Box

235/25R19 vs 235/35R19

235/35R19 compared with 235/25R19

+7.8% diameter, 0.0" width

235/35R19 is 25.48" tall vs 23.63". More than the 3% rule of thumb, so check carefully before switching.

23.6"19" rim2.3"9.3" wide
235/25R19 (solid) compared with 235/35R19 (dashed outline), drawn to scale

With 235/35R19 tires, when your speedometer says 60 mph you are really going

64.7 mph

235/35R19 is +1.85 inches (+7.8%) in overall diameter. That is more than the 3% most shops and makers recommend.

235/25R19235/35R19Difference%
Overall diameter23.63"25.48"+1.85"+7.8%
Section width9.25"9.25"0.00"0.0%
Sidewall height2.31"3.24"+0.93"+40.0%
Circumference74.22"80.04"+5.81"+7.8%
Revolutions per mile853.6791.6−62.0−7.3%

Speedometer difference

If your vehicle came with 235/25R19 and you fit 235/35R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.6 mph+1.6 mph
30 mph32.3 mph+2.3 mph
40 mph43.1 mph+3.1 mph
50 mph53.9 mph+3.9 mph
60 mph64.7 mph+4.7 mph
65 mph70.1 mph+5.1 mph
70 mph75.5 mph+5.5 mph
75 mph80.9 mph+5.9 mph
80 mph86.3 mph+6.3 mph

Each size on its own

Questions

Which is bigger, 235/25R19 or 235/35R19?
235/35R19 is taller by 1.85 inches (25.48" vs 23.63"). 235/25R19 is the same width.
Can I replace 235/25R19 with 235/35R19?
It is not recommended without checking carefully. The diameter difference is +7.8%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 235/35R19 change my speedometer?
When your speedometer reads 60 mph with 235/35R19 fitted (calibrated for 235/25R19), your real speed is 64.7 mph. Your odometer will under-count miles by about 7.8%.
Will 235/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.93 inches of ground clearance at the axle.

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