275/70R16 vs 265/75R16
265/75R16 is a safe swap for 275/70R16 by the usual ±3% rule: the diameter differs by +1.58%.
Speedometer and odometer
With 265/75R16 on a car calibrated for 275/70R16, the speedometer reads 59.1 mph when you're really doing 60, and the odometer under-counts by 1.6%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.5 mph |
| 45 mph | 45.7 mph |
| 60 mph | 60.9 mph |
| 70 mph | 71.1 mph |
| 80 mph | 81.3 mph |
Other sizes close to 275/70R16
Questions
Can I replace 275/70R16 with 265/75R16?
265/75R16 is a safe swap for 275/70R16 by the usual ±3% rule: the diameter differs by +1.58%.
What's the difference between 275/70R16 and 265/75R16?
265/75R16 is 0.49" taller and 10 mm narrower; the sidewall is +0.25". At an indicated 60 mph you'd actually be doing 60.9 mph.
Will 265/75R16 fit on 275/70R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 265 mm tire and the fender clearance.