Tire Size Box

305/30R22 vs 295/35R22

295/35R22 compared with 305/30R22

+3.2% diameter, −0.4" width

295/35R22 is 30.13" tall vs 29.20". More than the 3% rule of thumb, so check carefully before switching.

29.2"22" rim3.6"12.0" wide
305/30R22 (solid) compared with 295/35R22 (dashed outline), drawn to scale

With 295/35R22 tires, when your speedometer says 60 mph you are really going

61.9 mph

295/35R22 is +0.93 inches (+3.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

305/30R22295/35R22Difference%
Overall diameter29.20"30.13"+0.93"+3.2%
Section width12.01"11.61"−0.39"−3.3%
Sidewall height3.60"4.06"+0.46"+12.8%
Circumference91.75"94.66"+2.91"+3.2%
Revolutions per mile690.6669.4−21.2−3.1%

Speedometer difference

If your vehicle came with 305/30R22 and you fit 295/35R22, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.6 mph+0.6 mph
30 mph31.0 mph+1.0 mph
40 mph41.3 mph+1.3 mph
50 mph51.6 mph+1.6 mph
60 mph61.9 mph+1.9 mph
65 mph67.1 mph+2.1 mph
70 mph72.2 mph+2.2 mph
75 mph77.4 mph+2.4 mph
80 mph82.5 mph+2.5 mph

Each size on its own

Questions

Which is bigger, 305/30R22 or 295/35R22?
295/35R22 is taller by 0.93 inches (30.13" vs 29.20"). 305/30R22 is wider by 0.39 inches.
Can I replace 305/30R22 with 295/35R22?
It is not recommended without checking carefully. The diameter difference is +3.2%, 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 295/35R22 change my speedometer?
When your speedometer reads 60 mph with 295/35R22 fitted (calibrated for 305/30R22), your real speed is 61.9 mph. Your odometer will under-count miles by about 3.2%.
Will 295/35R22 lift my vehicle?
Ride height changes by half the diameter difference: +0.46 inches of ground clearance at the axle.

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