Tire Size Box

285/25R22 vs 285/35R22

285/35R22 compared with 285/25R22

+8.1% diameter, 0.0" width

285/35R22 is 29.85" tall vs 27.61". More than the 3% rule of thumb, so check carefully before switching.

27.6"22" rim2.8"11.2" wide
285/25R22 (solid) compared with 285/35R22 (dashed outline), drawn to scale

With 285/35R22 tires, when your speedometer says 60 mph you are really going

64.9 mph

285/35R22 is +2.24 inches (+8.1%) in overall diameter. That is more than the 3% most shops and makers recommend.

285/25R22285/35R22Difference%
Overall diameter27.61"29.85"+2.24"+8.1%
Section width11.22"11.22"0.00"0.0%
Sidewall height2.81"3.93"+1.12"+40.0%
Circumference86.74"93.79"+7.05"+8.1%
Revolutions per mile730.5675.6−54.9−7.5%

Speedometer difference

If your vehicle came with 285/25R22 and you fit 285/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.6 mph+1.6 mph
30 mph32.4 mph+2.4 mph
40 mph43.3 mph+3.3 mph
50 mph54.1 mph+4.1 mph
60 mph64.9 mph+4.9 mph
65 mph70.3 mph+5.3 mph
70 mph75.7 mph+5.7 mph
75 mph81.1 mph+6.1 mph
80 mph86.5 mph+6.5 mph

Each size on its own

Questions

Which is bigger, 285/25R22 or 285/35R22?
285/35R22 is taller by 2.24 inches (29.85" vs 27.61"). 285/25R22 is the same width.
Can I replace 285/25R22 with 285/35R22?
It is not recommended without checking carefully. The diameter difference is +8.1%, 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 285/35R22 change my speedometer?
When your speedometer reads 60 mph with 285/35R22 fitted (calibrated for 285/25R22), your real speed is 64.9 mph. Your odometer will under-count miles by about 8.1%.
Will 285/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +1.12 inches of ground clearance at the axle.

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