CarSpecsHQ

265/70R16 vs 235/75R17

235/75R17 is a safe swap for 265/70R16 by the usual ±3% rule: the diameter differs by +0.89%.

16" → 17"
265/70R16 30.61" · 235/75R17 30.88" · drawn to scale

Side by side

265/70R16235/75R17Difference
Overall diameter30.61"30.88"+0.27" (+0.89%)
Section width265 mm235 mm-30 mm
Sidewall7.30"6.94"-0.36"
Rim16"17"+1"
Circumference96.2"97.0"+0.9"
Revs per mile659653-6
Ride height——+0.14"
Speedometer reads 60 mph60.060.5+0.5 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.5 mph

With 235/75R17 on a car calibrated for 265/70R16, the speedometer reads 59.5 mph when you're really doing 60, and the odometer under-counts by 0.9%.

Speedo showsActual speed
30 mph30.3 mph
45 mph45.4 mph
60 mph60.5 mph
70 mph70.6 mph
80 mph80.7 mph

Other sizes close to 265/70R16

Questions

Can I replace 265/70R16 with 235/75R17?

235/75R17 is a safe swap for 265/70R16 by the usual ±3% rule: the diameter differs by +0.89%.

What's the difference between 265/70R16 and 235/75R17?

235/75R17 is 0.27" taller and 30 mm narrower; the sidewall is -0.36". At an indicated 60 mph you'd actually be doing 60.5 mph.

Will 235/75R17 fit on 265/70R16 wheels?

No — 265/70R16 needs a 16" wheel and 235/75R17 a 17" wheel. This is a plus/minus-size swap that changes wheels too.