CarSpecsHQ

265/60R18 vs 265/65R17

265/65R17 is a safe swap for 265/60R18 by the usual ±3% rule: the diameter differs by +0.14%.

18" → 17"
265/60R18 30.52" · 265/65R17 30.56" · drawn to scale

Side by side

265/60R18265/65R17Difference
Overall diameter30.52"30.56"+0.04" (+0.14%)
Section width265 mm265 mm0 mm
Sidewall6.26"6.78"+0.52"
Rim18"17"-1"
Circumference95.9"96.0"+0.1"
Revs per mile661660-1
Ride height——+0.02"
Speedometer reads 60 mph60.060.1+0.1 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.1 mph

With 265/65R17 on a car calibrated for 265/60R18, the speedometer reads 59.9 mph when you're really doing 60, and the odometer under-counts by 0.1%.

Speedo showsActual speed
30 mph30.0 mph
45 mph45.1 mph
60 mph60.1 mph
70 mph70.1 mph
80 mph80.1 mph

Other sizes close to 265/60R18

Questions

Can I replace 265/60R18 with 265/65R17?

265/65R17 is a safe swap for 265/60R18 by the usual ±3% rule: the diameter differs by +0.14%.

What's the difference between 265/60R18 and 265/65R17?

265/65R17 is 0.04" taller and 0 mm wider; the sidewall is +0.52". At an indicated 60 mph you'd actually be doing 60.1 mph.

Will 265/65R17 fit on 265/60R18 wheels?

No — 265/60R18 needs a 18" wheel and 265/65R17 a 17" wheel. This is a plus/minus-size swap that changes wheels too.