165/65R14 vs 165/50R16 tire size comparison

Change either size and everything below updates.

Start from your car make, model, year
Current tire size
/R
xR
New tire size
/R
xR

Width in mm · aspect = sidewall height as a % of width · rim in inches

Flotation (LT) sizes, all in inches: overall diameter × section width, then rim

165/65R14: 22.44″ (570 mm) tall, 6.50″ (165 mm) wide, sidewall 4.22″ (107 mm) — 899 revolutions per mile.

Well within tolerance

+0.23% diameter

The overall diameter changes by less than 1.5%, so speedometer error is negligible and ride height barely moves.

  • Needs 16″ wheels: this tire does not fit your 14″ rims.

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Measurement165/65R14165/50R16Diff%
Overall diameter22.44″570 mm22.50″571 mm+0.05″+0.2%
Section width165.0 mm165.0 mm0.0 mm0.0%
Sidewall height107.3 mm82.5 mm−24.8 mm−23.1%
Rim diameter14″16″+2″+14.3%
Circumference70.51″1791 mm70.67″1795 mm+0.16″+0.2%
Revolutions per mileturns per distance; drives the odometer899558 /km897557 /km−2−0.2%
Ride height change——+0.03″ +0.7 mm

Speedometer reading

Speedo shows
60mph
97 km/h
Actual speed
60.1mph
97 km/h

Overlay

165/65R14165/50R16

Plus sizing: 165/65R14 on smaller or bigger wheels

Sizes fitted to cars that keep the overall diameter within 3% of 165/65R14 on a rim one inch smaller or up to two inches bigger, closest first.

RimSizeDiameterChangeCompare
R13 (−1) 185/65R13 22.47″ +0.1% Compare
175/70R13 22.65″ +0.9% Compare
R15 (+1) 145/65R15 22.42″ −0.1% Compare
135/70R15 22.44″ 0.0% Compare
R16 (+2) 165/50R16 22.50″ +0.2% Compare
145/55R16 22.28″ −0.7% Compare

How to use the tire size calculator

Put your current tire size — width, aspect ratio and rim diameter — into the first form, then your desired size into the second. You’ll get the difference between the new and the old size, plus the speedometer reading difference and your actual speed on the new set. Both metric and flotation (LT inch) sizes are supported.

The calculator helps you decide whether a set of tires and wheels will fit your car. To compare tires by brand and model instead, use our tire comparison tool; to look up factory sizes, browse by car make.

Changing wheels too? The wheel offset calculator shows how far a new wheel width and offset move the tire toward the suspension and the fender.

Reading a tire size

225/45R17
225
Section width in millimetres
45
Aspect ratio — sidewall height as a % of width
R
Radial construction
17
Rim diameter in inches

Full guide to the tire sidewall →

Sizes often compared with 165/65R14