Tire Size Box

225/30R19 vs 225/35R19

225/35R19 compared with 225/30R19

+3.6% diameter, 0.0" width

225/35R19 is 25.20" tall vs 24.31". More than the 3% rule of thumb, so check carefully before switching.

24.3"19" rim2.7"8.9" wide
225/30R19 (solid) compared with 225/35R19 (dashed outline), drawn to scale

With 225/35R19 tires, when your speedometer says 60 mph you are really going

62.2 mph

225/35R19 is +0.89 inches (+3.6%) in overall diameter. That is more than the 3% most shops and makers recommend.

225/30R19225/35R19Difference%
Overall diameter24.31"25.20"+0.89"+3.6%
Section width8.86"8.86"0.00"0.0%
Sidewall height2.66"3.10"+0.44"+16.7%
Circumference76.39"79.17"+2.78"+3.6%
Revolutions per mile829.5800.3−29.2−3.5%

Speedometer difference

If your vehicle came with 225/30R19 and you fit 225/35R19, 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 mph41.5 mph+1.5 mph
50 mph51.8 mph+1.8 mph
60 mph62.2 mph+2.2 mph
65 mph67.4 mph+2.4 mph
70 mph72.6 mph+2.6 mph
75 mph77.7 mph+2.7 mph
80 mph82.9 mph+2.9 mph

Each size on its own

Questions

Which is bigger, 225/30R19 or 225/35R19?
225/35R19 is taller by 0.89 inches (25.20" vs 24.31"). 225/30R19 is the same width.
Can I replace 225/30R19 with 225/35R19?
It is not recommended without checking carefully. The diameter difference is +3.6%, 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 225/35R19 change my speedometer?
When your speedometer reads 60 mph with 225/35R19 fitted (calibrated for 225/30R19), your real speed is 62.2 mph. Your odometer will under-count miles by about 3.6%.
Will 225/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.44 inches of ground clearance at the axle.

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