Tire Size Box

335/25R22 vs 335/30R22

335/30R22 compared with 335/25R22

+4.6% diameter, 0.0" width

335/30R22 is 29.91" tall vs 28.59". More than the 3% rule of thumb, so check carefully before switching.

28.6"22" rim3.3"13.2" wide
335/25R22 (solid) compared with 335/30R22 (dashed outline), drawn to scale

With 335/30R22 tires, when your speedometer says 60 mph you are really going

62.8 mph

335/30R22 is +1.32 inches (+4.6%) in overall diameter. That is more than the 3% most shops and makers recommend.

335/25R22335/30R22Difference%
Overall diameter28.59"29.91"+1.32"+4.6%
Section width13.19"13.19"0.00"0.0%
Sidewall height3.30"3.96"+0.66"+20.0%
Circumference89.83"93.98"+4.14"+4.6%
Revolutions per mile705.3674.2−31.1−4.4%

Speedometer difference

If your vehicle came with 335/25R22 and you fit 335/30R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.9 mph+0.9 mph
30 mph31.4 mph+1.4 mph
40 mph41.8 mph+1.8 mph
50 mph52.3 mph+2.3 mph
60 mph62.8 mph+2.8 mph
65 mph68.0 mph+3.0 mph
70 mph73.2 mph+3.2 mph
75 mph78.5 mph+3.5 mph
80 mph83.7 mph+3.7 mph

Each size on its own

Questions

Which is bigger, 335/25R22 or 335/30R22?
335/30R22 is taller by 1.32 inches (29.91" vs 28.59"). 335/25R22 is the same width.
Can I replace 335/25R22 with 335/30R22?
It is not recommended without checking carefully. The diameter difference is +4.6%, 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 335/30R22 change my speedometer?
When your speedometer reads 60 mph with 335/30R22 fitted (calibrated for 335/25R22), your real speed is 62.8 mph. Your odometer will under-count miles by about 4.6%.
Will 335/30R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.66 inches of ground clearance at the axle.

Other comparisons