215/70R15 vs 235/60R15

215/70R15 is 0.7" taller than 235/60R15 (2.8%)

Diameter difference−2.79%diameter 26.85" → 26.10"
215/70R15235/60R15
215/70R15235/60R15Difference
Overall diameter26.85"26.10"−0.75"
Section width8.46"9.25"+0.79"
Sidewall height5.93"5.55"−0.37"
Circumference84.4"82.0"−2.4"
Revolutions per mile751773+22
Wheel diameter15"15"±0"

Speedometer

ShowsActualDiff
30 mph29.2 mph−0.8
45 mph43.7 mph−1.3
60 mph58.3 mph−1.7
70 mph68.0 mph−2.0
80 mph77.8 mph−2.2

Gear ratio to match

CurrentEquivalent
3.423.32
3.553.45
3.733.63
4.103.99

235/60R15 is 0.75" shorter than 215/70R15, a −2.79% change in diameter, inside the 3% range most shops treat as a safe swap.

Ground clearance changes by 0.37" (half the diameter change), and the tire needs 0.37" less room above it.

235/60R15 is 0.79" wider. On the same wheel offset about half of that, 0.39", moves toward the suspension and half toward the fender.

Both fit a 15" wheel; the sidewall is 0.37" shorter on 235/60R15.

Details: 215/70R15 in inches · 235/60R15 in inches · change sizes in the calculator

FAQ

What is the difference between 215/70R15 and 235/60R15?

235/60R15 is 0.75" shorter (−2.79%) and 0.79" wider than 215/70R15.

Will 235/60R15 change my speedometer?

Yes, by −2.79%. When the speedometer shows 60 mph you would be going 58.3 mph.

Can I replace 215/70R15 with 235/60R15?

Often yes: the diameter change of −2.8% is within the common 3% guideline. Check the load index, speed rating and clearance.