Tire Size Box

285/30R22 vs 285/35R22

285/35R22 compared with 285/30R22

+3.9% diameter, 0.0" width

285/35R22 is 29.85" tall vs 28.73". More than the 3% rule of thumb, so check carefully before switching.

28.7"22" rim3.4"11.2" wide
285/30R22 (solid) compared with 285/35R22 (dashed outline), drawn to scale

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

62.3 mph

285/35R22 is +1.12 inches (+3.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

285/30R22285/35R22Difference%
Overall diameter28.73"29.85"+1.12"+3.9%
Section width11.22"11.22"0.00"0.0%
Sidewall height3.37"3.93"+0.56"+16.7%
Circumference90.27"93.79"+3.53"+3.9%
Revolutions per mile701.9675.6−26.4−3.8%

Speedometer difference

If your vehicle came with 285/30R22 and you fit 285/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.8 mph+0.8 mph
30 mph31.2 mph+1.2 mph
40 mph41.6 mph+1.6 mph
50 mph52.0 mph+2.0 mph
60 mph62.3 mph+2.3 mph
65 mph67.5 mph+2.5 mph
70 mph72.7 mph+2.7 mph
75 mph77.9 mph+2.9 mph
80 mph83.1 mph+3.1 mph

Each size on its own

Questions

Which is bigger, 285/30R22 or 285/35R22?
285/35R22 is taller by 1.12 inches (29.85" vs 28.73"). 285/30R22 is the same width.
Can I replace 285/30R22 with 285/35R22?
It is not recommended without checking carefully. The diameter difference is +3.9%, 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 285/35R22 change my speedometer?
When your speedometer reads 60 mph with 285/35R22 fitted (calibrated for 285/30R22), your real speed is 62.3 mph. Your odometer will under-count miles by about 3.9%.
Will 285/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.56 inches of ground clearance at the axle.

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