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225/60R17 vs 245/45R19 tire size comparison

225/60R17245/45R19

245/45R19 is 0.1 in (0.19%) taller than 225/60R17 and 0.7 in wider. They fit different wheels: 225/60R17 a 17-inch wheel and 245/45R19 a 19-inch wheel.

225/60R17 and 245/45R19 side by side

+0.1 in / +0.19%225/60R17: 27.6 in tall, solid line245/45R19: 27.7 in tall, dashed line225/60R17Width 8.9 in (225 mm)Sidewall 5.3 in (135 mm)245/45R19Width 9.6 in (245 mm)Sidewall 4.3 in (110 mm)
225/60R17 is drawn with a solid line and 245/45R19 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 225/60R17 and 245/45R19, with the difference (245/45R19 minus 225/60R17)
Measurement225/60R17245/45R19DifferenceDifference %
Section width8.9 in (225 mm)9.6 in (245 mm)+0.7 in (+20 mm)+8.89%
Sidewall height5.3 in (135 mm)4.3 in (110 mm)-1.0 in (-25 mm)-18.33%
Wheel (rim) diameter17.0 in (432 mm)19.0 in (483 mm)+2.0 in (+51 mm)+11.76%
Overall diameter27.6 in (702 mm)27.7 in (703 mm)+0.1 in (+1 mm)+0.19%
Circumference86.8 in (2205 mm)87.0 in (2209 mm)+0.2 in (+4 mm)+0.19%
Revolutions per mile730729-1-0.18%

Differences are 245/45R19 minus 225/60R17; percentages are relative to 225/60R17. These are nominal design dimensions. Real tires vary by brand, tread depth, wheel width, load and pressure.

The overall diameter differs by 0.19%, 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 225/60R17, the actual speed on 245/45R19 is about 60.1 mph. When it reads 60 mph on a vehicle built for 245/45R19, the actual speed on 225/60R17 is about 59.9 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, 225/60R17 against 245/45R19
Speedometer readsActual on 245/45R19 (built for 225/60R17)Actual on 225/60R17 (built for 245/45R19)
20 mph20.0 mph20.0 mph
30 mph30.1 mph29.9 mph
40 mph40.1 mph39.9 mph
50 mph50.1 mph49.9 mph
60 mph60.1 mph59.9 mph
70 mph70.1 mph69.9 mph
80 mph80.1 mph79.9 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

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Shop for 225/60R17 or 245/45R19 tires

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Other comparisons with 225/60R17

Side-by-side dimensions and speedometer difference for sizes close to 225/60R17 in overall diameter.

Other comparisons with 245/45R19

Side-by-side dimensions and speedometer difference for sizes close to 245/45R19 in overall diameter.

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