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265/55R20 vs 275/55R19 tire size comparison

265/55R20275/55R19

275/55R19 is 0.6 in (1.80%) shorter than 265/55R20 and 0.4 in wider. They fit different wheels: 265/55R20 a 20-inch wheel and 275/55R19 a 19-inch wheel.

265/55R20 and 275/55R19 side by side

-0.6 in / -1.80%265/55R20: 31.5 in tall, solid line275/55R19: 30.9 in tall, dashed line265/55R20Width 10.4 in (265 mm)Sidewall 5.7 in (146 mm)275/55R19Width 10.8 in (275 mm)Sidewall 6.0 in (151 mm)
265/55R20 is drawn with a solid line and 275/55R19 with a dashed line. In each drawing both tires are to the same scale; the tread shoulder and bead curves are simplified. The table below has the same numbers.
Dimensions of 265/55R20 and 275/55R19, with the difference (275/55R19 minus 265/55R20)
Measurement265/55R20275/55R19DifferenceDifference %
Section width10.4 in (265 mm)10.8 in (275 mm)+0.4 in (+10 mm)+3.77%
Sidewall height5.7 in (146 mm)6.0 in (151 mm)+0.3 in (+5 mm)+3.77%
Wheel (rim) diameter20.0 in (508 mm)19.0 in (483 mm)-1.0 in (-25 mm)-5.00%
Overall diameter31.5 in (800 mm)30.9 in (785 mm)-0.6 in (-15 mm)-1.80%
Circumference98.9 in (2512 mm)97.1 in (2466 mm)-1.8 in (-46 mm)-1.80%
Revolutions per mile641652+11+1.83%

Differences are 275/55R19 minus 265/55R20; percentages are relative to 265/55R20. These are nominal design dimensions. Real tires vary by brand, tread depth, wheel width, load and pressure.

The overall diameter differs by 1.80%, which is within the common 3% rule of thumb.

The rule of thumb keeps a replacement size within about 3% of the original overall diameter. It covers diameter only. It is not a fit, load or safety check, because width, wheel diameter, load capacity and clearance matter too. Confirm any size change with your vehicle's owner's manual or a tire professional.

Speedometer difference

When the speedometer reads 60 mph on a vehicle built for 265/55R20, the actual speed on 275/55R19 is about 58.9 mph. When it reads 60 mph on a vehicle built for 275/55R19, the actual speed on 265/55R20 is about 61.1 mph. These figures assume the speedometer is accurate on the original size and use nominal dimensions, so treat them as estimates.

Actual speed for a given speedometer reading, 265/55R20 against 275/55R19
Speedometer readsActual on 275/55R19 (built for 265/55R20)Actual on 265/55R20 (built for 275/55R19)
20 mph19.6 mph20.4 mph
30 mph29.5 mph30.6 mph
40 mph39.3 mph40.7 mph
50 mph49.1 mph50.9 mph
60 mph58.9 mph61.1 mph
70 mph68.7 mph71.3 mph
80 mph78.6 mph81.5 mph

A common rule of thumb is to keep a replacement size within about 3% of the original overall diameter. Check the tire placard on the driver's door jamb and your owner's manual for the sizes your vehicle was built for. Confirm any size change with your vehicle's owner's manual or a tire professional.

Which vehicles use each size?

These vehicles list the size among their verified sizes, by trim. Open one to see all of its sizes.

Check it in the calculator

The calculator takes the same two sizes and shows the full comparison, or lets you swap either one for another size.

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Shop for 265/55R20 or 275/55R19 tires

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Other comparisons with 265/55R20

Side-by-side dimensions and speedometer difference for sizes close to 265/55R20 in overall diameter.

Other comparisons with 275/55R19

Side-by-side dimensions and speedometer difference for sizes close to 275/55R19 in overall diameter.

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