235/60R16 vs 215/70R16

Q: Can I replace 235/60R16 with 215/70R16?

215/70R16 is a safe swap for 235/60R16 by the usual ±3% rule: the diameter differs by +2.76%.

215/70R16 is a safe swap for 235/60R16 by the usual ±3% rule: the diameter differs by +2.76%.

235/60R16 27.10" · 215/70R16 27.85" · drawn to scale

Side by side

	235/60R16	215/70R16	Difference
Overall diameter	27.10"	27.85"	+0.75" (+2.76%)
Section width	235 mm	215 mm	-20 mm
Sidewall	5.55"	5.93"	+0.37"
Rim	16"	16"	same
Circumference	85.1"	87.5"	+2.4"
Revs per mile	744	724	-20
Ride height	—	—	+0.37"
Speedometer reads 60 mph	60.0	61.7	+1.7 mph

Speedometer and odometer

With 215/70R16 on a car calibrated for 235/60R16, the speedometer reads 58.4 mph when you're really doing 60, and the odometer under-counts by 2.8%.

Speedo shows	Actual speed
30 mph	30.8 mph
45 mph	46.2 mph
60 mph	61.7 mph
70 mph	71.9 mph
80 mph	82.2 mph

Other sizes close to 235/60R16

Questions

Can I replace 235/60R16 with 215/70R16?

215/70R16 is a safe swap for 235/60R16 by the usual ±3% rule: the diameter differs by +2.76%.

What's the difference between 235/60R16 and 215/70R16?

215/70R16 is 0.75" taller and 20 mm narrower; the sidewall is +0.37". At an indicated 60 mph you'd actually be doing 61.7 mph.

Will 215/70R16 fit on 235/60R16 wheels?

Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 215 mm tire and the fender clearance.