Tire Size Box

215/65R19 vs 235/65R19

235/65R19 compared with 215/65R19

+3.4% diameter, +0.8" width

235/65R19 is 31.03" tall vs 30.00". More than the 3% rule of thumb, so check carefully before switching.

30.0"19" rim5.5"8.5" wide
215/65R19 (solid) compared with 235/65R19 (dashed outline), drawn to scale

With 235/65R19 tires, when your speedometer says 60 mph you are really going

62.0 mph

235/65R19 is +1.02 inches (+3.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

215/65R19235/65R19Difference%
Overall diameter30.00"31.03"+1.02"+3.4%
Section width8.46"9.25"+0.79"+9.3%
Sidewall height5.50"6.01"+0.51"+9.3%
Circumference94.26"97.48"+3.22"+3.4%
Revolutions per mile672.2650.0−22.2−3.3%

Speedometer difference

If your vehicle came with 215/65R19 and you fit 235/65R19, 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, 215/65R19 or 235/65R19?
235/65R19 is taller by 1.02 inches (31.03" vs 30.00"). 235/65R19 is wider by 0.79 inches.
Can I replace 215/65R19 with 235/65R19?
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 235/65R19 change my speedometer?
When your speedometer reads 60 mph with 235/65R19 fitted (calibrated for 215/65R19), your real speed is 62.0 mph. Your odometer will under-count miles by about 3.4%.
Will 235/65R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.51 inches of ground clearance at the axle.

Other comparisons