Tire Size Box

295/30R19 vs 285/35R19

285/35R19 compared with 295/30R19

+3.4% diameter, −0.4" width

285/35R19 is 26.85" tall vs 25.97". More than the 3% rule of thumb, so check carefully before switching.

26.0"19" rim3.5"11.6" wide
295/30R19 (solid) compared with 285/35R19 (dashed outline), drawn to scale

With 285/35R19 tires, when your speedometer says 60 mph you are really going

62.0 mph

285/35R19 is +0.89 inches (+3.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

295/30R19285/35R19Difference%
Overall diameter25.97"26.85"+0.89"+3.4%
Section width11.61"11.22"−0.39"−3.4%
Sidewall height3.48"3.93"+0.44"+12.7%
Circumference81.58"84.37"+2.78"+3.4%
Revolutions per mile776.6751.0−25.6−3.3%

Speedometer difference

If your vehicle came with 295/30R19 and you fit 285/35R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.0 mph+1.0 mph
40 mph41.4 mph+1.4 mph
50 mph51.7 mph+1.7 mph
60 mph62.0 mph+2.0 mph
65 mph67.2 mph+2.2 mph
70 mph72.4 mph+2.4 mph
75 mph77.6 mph+2.6 mph
80 mph82.7 mph+2.7 mph

Each size on its own

Questions

Which is bigger, 295/30R19 or 285/35R19?
285/35R19 is taller by 0.89 inches (26.85" vs 25.97"). 295/30R19 is wider by 0.39 inches.
Can I replace 295/30R19 with 285/35R19?
It is not recommended without checking carefully. The diameter difference is +3.4%, 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 285/35R19 change my speedometer?
When your speedometer reads 60 mph with 285/35R19 fitted (calibrated for 295/30R19), your real speed is 62.0 mph. Your odometer will under-count miles by about 3.4%.
Will 285/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.44 inches of ground clearance at the axle.

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