Tire Size Box

195/60R18 vs 215/60R18

215/60R18 compared with 195/60R18

+3.5% diameter, +0.8" width

215/60R18 is 28.16" tall vs 27.21". More than the 3% rule of thumb, so check carefully before switching.

27.2"18" rim4.6"7.7" wide
195/60R18 (solid) compared with 215/60R18 (dashed outline), drawn to scale

With 215/60R18 tires, when your speedometer says 60 mph you are really going

62.1 mph

215/60R18 is +0.94 inches (+3.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/60R18215/60R18Difference%
Overall diameter27.21"28.16"+0.94"+3.5%
Section width7.68"8.46"+0.79"+10.3%
Sidewall height4.61"5.08"+0.47"+10.3%
Circumference85.49"88.46"+2.97"+3.5%
Revolutions per mile741.1716.3−24.9−3.4%

Speedometer difference

If your vehicle came with 195/60R18 and you fit 215/60R18, 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 mph62.1 mph+2.1 mph
65 mph67.3 mph+2.3 mph
70 mph72.4 mph+2.4 mph
75 mph77.6 mph+2.6 mph
80 mph82.8 mph+2.8 mph

Each size on its own

Questions

Which is bigger, 195/60R18 or 215/60R18?
215/60R18 is taller by 0.94 inches (28.16" vs 27.21"). 215/60R18 is wider by 0.79 inches.
Can I replace 195/60R18 with 215/60R18?
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 215/60R18 change my speedometer?
When your speedometer reads 60 mph with 215/60R18 fitted (calibrated for 195/60R18), your real speed is 62.1 mph. Your odometer will under-count miles by about 3.5%.
Will 215/60R18 lift my vehicle?
Ride height changes by half the diameter difference: +0.47 inches of ground clearance at the axle.

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