Tire Size Box

275/30R19 vs 265/35R19

265/35R19 compared with 275/30R19

+3.2% diameter, −0.4" width

265/35R19 is 26.30" tall vs 25.50". More than the 3% rule of thumb, so check carefully before switching.

25.5"19" rim3.2"10.8" wide
275/30R19 (solid) compared with 265/35R19 (dashed outline), drawn to scale

With 265/35R19 tires, when your speedometer says 60 mph you are really going

61.9 mph

265/35R19 is +0.81 inches (+3.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

275/30R19265/35R19Difference%
Overall diameter25.50"26.30"+0.81"+3.2%
Section width10.83"10.43"−0.39"−3.6%
Sidewall height3.25"3.65"+0.40"+12.4%
Circumference80.10"82.63"+2.54"+3.2%
Revolutions per mile791.0766.8−24.3−3.1%

Speedometer difference

If your vehicle came with 275/30R19 and you fit 265/35R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.6 mph+0.6 mph
30 mph30.9 mph+0.9 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, 275/30R19 or 265/35R19?
265/35R19 is taller by 0.81 inches (26.30" vs 25.50"). 275/30R19 is wider by 0.39 inches.
Can I replace 275/30R19 with 265/35R19?
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 265/35R19 change my speedometer?
When your speedometer reads 60 mph with 265/35R19 fitted (calibrated for 275/30R19), your real speed is 61.9 mph. Your odometer will under-count miles by about 3.2%.
Will 265/35R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.40 inches of ground clearance at the axle.

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