265/70R17 vs 265/75R17

265/75R17 is 1.0" taller than 265/70R17 (3.3%)

Diameter difference+3.30%diameter 31.61" → 32.65"
265/70R17265/75R17
265/70R17265/75R17Difference
Overall diameter31.61"32.65"+1.04"
Section width10.43"10.43"±0.00"
Sidewall height7.30"7.82"+0.52"
Circumference99.3"102.6"+3.3"
Revolutions per mile638618−20
Wheel diameter17"17"±0"

Speedometer

ShowsActualDiff
30 mph31.0 mph+1.0
45 mph46.5 mph+1.5
60 mph62.0 mph+2.0
70 mph72.3 mph+2.3
80 mph82.6 mph+2.6

Gear ratio to match

CurrentEquivalent
3.423.53
3.553.67
3.733.85
4.104.24

265/75R17 is 1.04" taller than 265/70R17, a +3.30% 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 0.52" (half the diameter change), and the tire needs 0.52" more room above it.

Both tires are the same width, 10.43".

Both fit a 17" wheel; the sidewall is 0.52" taller on 265/75R17.

Details: 265/70R17 in inches · 265/75R17 in inches · change sizes in the calculator

FAQ

What is the difference between 265/70R17 and 265/75R17?

265/75R17 is 1.04" taller (+3.30%) and 0.00" wider than 265/70R17.

Will 265/75R17 change my speedometer?

Yes, by +3.30%. When the speedometer shows 60 mph you would be going 62.0 mph.

Can I replace 265/70R17 with 265/75R17?

It is a +3.3% diameter change, larger than the common 3% guideline, so check clearance and plan to recalibrate.