Tire Size Box

295/30R22 vs 285/35R22

285/35R22 compared with 295/30R22

+3.1% diameter, −0.4" width

285/35R22 is 29.85" tall vs 28.97". More than the 3% rule of thumb, so check carefully before switching.

29.0"22" rim3.5"11.6" wide
295/30R22 (solid) compared with 285/35R22 (dashed outline), drawn to scale

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

61.8 mph

285/35R22 is +0.89 inches (+3.1%) in overall diameter. That is more than the 3% most shops and makers recommend.

295/30R22285/35R22Difference%
Overall diameter28.97"29.85"+0.89"+3.1%
Section width11.61"11.22"−0.39"−3.4%
Sidewall height3.48"3.93"+0.44"+12.7%
Circumference91.01"93.79"+2.78"+3.1%
Revolutions per mile696.2675.6−20.7−3.0%

Speedometer difference

If your vehicle came with 295/30R22 and you fit 285/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.6 mph+0.6 mph
30 mph30.9 mph+0.9 mph
40 mph41.2 mph+1.2 mph
50 mph51.5 mph+1.5 mph
60 mph61.8 mph+1.8 mph
65 mph67.0 mph+2.0 mph
70 mph72.1 mph+2.1 mph
75 mph77.3 mph+2.3 mph
80 mph82.4 mph+2.4 mph

Each size on its own

Questions

Which is bigger, 295/30R22 or 285/35R22?
285/35R22 is taller by 0.89 inches (29.85" vs 28.97"). 295/30R22 is wider by 0.39 inches.
Can I replace 295/30R22 with 285/35R22?
It is not recommended without checking carefully. The diameter difference is +3.1%, 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 295/30R22), your real speed is 61.8 mph. Your odometer will under-count miles by about 3.1%.
Will 285/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.44 inches of ground clearance at the axle.

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