Tire Size Box

305/30R19 vs 295/35R19

295/35R19 compared with 305/30R19

+3.5% diameter, −0.4" width

295/35R19 is 27.13" tall vs 26.20". More than the 3% rule of thumb, so check carefully before switching.

26.2"19" rim3.6"12.0" wide
305/30R19 (solid) compared with 295/35R19 (dashed outline), drawn to scale

With 295/35R19 tires, when your speedometer says 60 mph you are really going

62.1 mph

295/35R19 is +0.93 inches (+3.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

305/30R19295/35R19Difference%
Overall diameter26.20"27.13"+0.93"+3.5%
Section width12.01"11.61"−0.39"−3.3%
Sidewall height3.60"4.06"+0.46"+12.8%
Circumference82.32"85.23"+2.91"+3.5%
Revolutions per mile769.6743.4−26.2−3.4%

Speedometer difference

If your vehicle came with 305/30R19 and you fit 295/35R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.1 mph+1.1 mph
40 mph41.4 mph+1.4 mph
50 mph51.8 mph+1.8 mph
60 mph62.1 mph+2.1 mph
65 mph67.3 mph+2.3 mph
70 mph72.5 mph+2.5 mph
75 mph77.6 mph+2.6 mph
80 mph82.8 mph+2.8 mph

Each size on its own

Questions

Which is bigger, 305/30R19 or 295/35R19?
295/35R19 is taller by 0.93 inches (27.13" vs 26.20"). 305/30R19 is wider by 0.39 inches.
Can I replace 305/30R19 with 295/35R19?
It is not recommended without checking carefully. The diameter difference is +3.5%, 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 295/35R19 change my speedometer?
When your speedometer reads 60 mph with 295/35R19 fitted (calibrated for 305/30R19), your real speed is 62.1 mph. Your odometer will under-count miles by about 3.5%.
Will 295/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.46 inches of ground clearance at the axle.

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