What is the diameter difference between 205/65R15 and 215/60R16?

205/65R15 has an overall diameter of 25.49 inches (648 mm). 215/60R16 is 26.16 inches (664 mm). That's a 0.67 inch (17 mm) difference — 215/60R16 is taller.

Will 215/60R16 cause speedometer error on a car fitted with 205/65R15?

Swapping 205/65R15 for 215/60R16 produces a speedometer error of about 2.6%. Your speedometer will read lower than your actual speed — a 60 mph indicated reading is really 61.6 mph. Anything under 3% is usually acceptable without recalibration.

How many revolutions per mile does each size do?

205/65R15 turns 791 revs per mile. 215/60R16 turns 771 revs per mile. Taller tyres turn fewer times per mile, which lowers effective final-drive ratio.

What's the sidewall height difference?

205/65R15 has a sidewall of 133 mm (5.25 in). 215/60R16 sidewall is 129 mm (5.08 in). Lower-profile sidewalls give sharper steering response but less bump compliance.

Is 215/60R16 a safe plus-size upgrade from 205/65R15?

A plus-size upgrade is considered safe when overall diameter stays within ±3% — here the difference is 2.6%. This swap is within the typical safe range; speedometer and ABS calibration should remain close to factory.

Tire size comparison

205/65R15 vs 215/60R16

Overall diameter, sidewall, revs per mile, and speedometer error — 215/60R16 is the taller tire, with a 2.6% speedo delta when swapping.

205/65R15

25.49in

648 mm overall diameter

215/60R16

26.16in

664 mm overall diameter

Diameter Δ

0.67 in

Speedo error

2.6%

205/65R15 revs/mi

791

215/60R16 revs/mi

771

Within the ±3% overall-diameter band usually considered safe for plus-sizing — speedometer and ABS calibration should stay close to factory.

Full spec

Side by side

Metric	205/65R15	215/60R16
Section width	205 mm	215 mm
Aspect ratio	65	60
Wheel diameter	15″	16″
Sidewall height	133 mm	129 mm
Overall diameter	25.49 in (648 mm)	26.16 in (664 mm)
Circumference	80.09 in	82.18 in
Revolutions / mile	791	771

Other comparisons for these sizes

195/65R15 vs 205/65R15 205/65R15 vs 205/60R16 205/60R16 vs 215/60R16 215/60R16 vs 215/55R17 215/60R16 vs 235/50R18 215/60R16 vs 225/60R16

FAQ

Frequently asked

What is the diameter difference between 205/65R15 and 215/60R16?: 205/65R15 has an overall diameter of 25.49 inches (648 mm). 215/60R16 is 26.16 inches (664 mm). That's a 0.67 inch (17 mm) difference — 215/60R16 is taller.
Will 215/60R16 cause speedometer error on a car fitted with 205/65R15?: Swapping 205/65R15 for 215/60R16 produces a speedometer error of about 2.6%. Your speedometer will read lower than your actual speed — a 60 mph indicated reading is really 61.6 mph. Anything under 3% is usually acceptable without recalibration.
How many revolutions per mile does each size do?: 205/65R15 turns 791 revs per mile. 215/60R16 turns 771 revs per mile. Taller tyres turn fewer times per mile, which lowers effective final-drive ratio.
What's the sidewall height difference?: 205/65R15 has a sidewall of 133 mm (5.25 in). 215/60R16 sidewall is 129 mm (5.08 in). Lower-profile sidewalls give sharper steering response but less bump compliance.
Is 215/60R16 a safe plus-size upgrade from 205/65R15?: A plus-size upgrade is considered safe when overall diameter stays within ±3% — here the difference is 2.6%. This swap is within the typical safe range; speedometer and ABS calibration should remain close to factory.