Tire Size Box

235/25R22 vs 235/35R22

235/35R22 compared with 235/25R22

+6.9% diameter, 0.0" width

235/35R22 is 28.48" tall vs 26.63". More than the 3% rule of thumb, so check carefully before switching.

26.6"22" rim2.3"9.3" wide
235/25R22 (solid) compared with 235/35R22 (dashed outline), drawn to scale

With 235/35R22 tires, when your speedometer says 60 mph you are really going

64.2 mph

235/35R22 is +1.85 inches (+6.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

235/25R22235/35R22Difference%
Overall diameter26.63"28.48"+1.85"+6.9%
Section width9.25"9.25"0.00"0.0%
Sidewall height2.31"3.24"+0.93"+40.0%
Circumference83.65"89.46"+5.81"+6.9%
Revolutions per mile757.5708.2−49.2−6.5%

Speedometer difference

If your vehicle came with 235/25R22 and you fit 235/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.4 mph+1.4 mph
30 mph32.1 mph+2.1 mph
40 mph42.8 mph+2.8 mph
50 mph53.5 mph+3.5 mph
60 mph64.2 mph+4.2 mph
65 mph69.5 mph+4.5 mph
70 mph74.9 mph+4.9 mph
75 mph80.2 mph+5.2 mph
80 mph85.6 mph+5.6 mph

Each size on its own

Questions

Which is bigger, 235/25R22 or 235/35R22?
235/35R22 is taller by 1.85 inches (28.48" vs 26.63"). 235/25R22 is the same width.
Can I replace 235/25R22 with 235/35R22?
It is not recommended without checking carefully. The diameter difference is +6.9%, 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 235/35R22 change my speedometer?
When your speedometer reads 60 mph with 235/35R22 fitted (calibrated for 235/25R22), your real speed is 64.2 mph. Your odometer will under-count miles by about 6.9%.
Will 235/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.93 inches of ground clearance at the axle.

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