265/75R16 vs 275/70R16

265/75R16 is 0.5" taller than 275/70R16 (1.6%)

Diameter difference−1.55%diameter 31.65" → 31.16"
265/75R16275/70R16
265/75R16275/70R16Difference
Overall diameter31.65"31.16"−0.49"
Section width10.43"10.83"+0.39"
Sidewall height7.82"7.58"−0.25"
Circumference99.4"97.9"−1.5"
Revolutions per mile637647+10
Wheel diameter16"16"±0"

Speedometer

ShowsActualDiff
30 mph29.5 mph−0.5
45 mph44.3 mph−0.7
60 mph59.1 mph−0.9
70 mph68.9 mph−1.1
80 mph78.8 mph−1.2

Gear ratio to match

CurrentEquivalent
3.423.37
3.553.49
3.733.67
4.104.04

275/70R16 is 0.49" shorter than 265/75R16, a −1.55% change in diameter, inside the 3% range most shops treat as a safe swap.

Ground clearance changes by 0.25" (half the diameter change), and the tire needs 0.25" less room above it.

275/70R16 is 0.39" wider. On the same wheel offset about half of that, 0.20", moves toward the suspension and half toward the fender.

Both fit a 16" wheel; the sidewall is 0.25" shorter on 275/70R16.

Details: 265/75R16 in inches · 275/70R16 in inches · change sizes in the calculator

FAQ

What is the difference between 265/75R16 and 275/70R16?

275/70R16 is 0.49" shorter (−1.55%) and 0.39" wider than 265/75R16.

Will 275/70R16 change my speedometer?

Yes, by −1.55%. When the speedometer shows 60 mph you would be going 59.1 mph.

Can I replace 265/75R16 with 275/70R16?

Often yes: the diameter change of −1.6% is within the common 3% guideline. Check the load index, speed rating and clearance.