245/75R16 vs 265/75R16

265/75R16 is 1.2" taller than 245/75R16 (3.9%)

Diameter difference+3.88%diameter 30.47" → 31.65"
245/75R16265/75R16
245/75R16265/75R16Difference
Overall diameter30.47"31.65"+1.18"
Section width9.65"10.43"+0.79"
Sidewall height7.23"7.82"+0.59"
Circumference95.7"99.4"+3.7"
Revolutions per mile662637−25
Wheel diameter16"16"±0"

Speedometer

ShowsActualDiff
30 mph31.2 mph+1.2
45 mph46.7 mph+1.7
60 mph62.3 mph+2.3
70 mph72.7 mph+2.7
80 mph83.1 mph+3.1

Gear ratio to match

CurrentEquivalent
3.423.55
3.553.69
3.733.87
4.104.26

265/75R16 is 1.18" taller than 245/75R16, a +3.88% change in diameter. That is more than the 3% many tire shops use as a limit, so plan on recalibrating the speedometer and checking ABS and stability control.

Ground clearance changes by 0.59" (half the diameter change), and the tire needs 0.59" more room above it.

265/75R16 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 16" wheel; the sidewall is 0.59" taller on 265/75R16.

Details: 245/75R16 in inches · 265/75R16 in inches · change sizes in the calculator

FAQ

What is the difference between 245/75R16 and 265/75R16?

265/75R16 is 1.18" taller (+3.88%) and 0.79" wider than 245/75R16.

Will 265/75R16 change my speedometer?

Yes, by +3.88%. When the speedometer shows 60 mph you would be going 62.3 mph.

Can I replace 245/75R16 with 265/75R16?

It is a +3.9% diameter change, larger than the common 3% guideline, so check clearance and plan to recalibrate.