195/80R15 vs 215/75R15

215/75R15 is 0.4" taller than 195/80R15 (1.5%)

Diameter difference+1.52%diameter 27.28" → 27.70"
195/80R15215/75R15
195/80R15215/75R15Difference
Overall diameter27.28"27.70"+0.41"
Section width7.68"8.46"+0.79"
Sidewall height6.14"6.35"+0.21"
Circumference85.7"87.0"+1.3"
Revolutions per mile739728−11
Wheel diameter15"15"±0"

Speedometer

ShowsActualDiff
30 mph30.5 mph+0.5
45 mph45.7 mph+0.7
60 mph60.9 mph+0.9
70 mph71.1 mph+1.1
80 mph81.2 mph+1.2

Gear ratio to match

CurrentEquivalent
3.423.47
3.553.60
3.733.79
4.104.16

215/75R15 is 0.41" taller than 195/80R15, a +1.52% change in diameter, inside the 3% range most shops treat as a safe swap.

Ground clearance changes by 0.21" (half the diameter change), and the tire needs 0.21" more room above it.

215/75R15 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 0.21" taller on 215/75R15.

Details: 195/80R15 in inches · 215/75R15 in inches · change sizes in the calculator

FAQ

What is the difference between 195/80R15 and 215/75R15?

215/75R15 is 0.41" taller (+1.52%) and 0.79" wider than 195/80R15.

Will 215/75R15 change my speedometer?

Yes, by +1.52%. When the speedometer shows 60 mph you would be going 60.9 mph.

Can I replace 195/80R15 with 215/75R15?

Often yes: the diameter change of +1.5% is within the common 3% guideline. Check the load index, speed rating and clearance.