tireheight.com

245/45R19 in inches

A 245/45R19 tire is 27.7″ tall and 9.6″ wide, and fits a 19″ wheel. In inches it is written 27.7×9.6R19.

Diameter27.68″
Width9.65″
Sidewall4.34″
245/45R19 drawn to scale: 27.68 inch diameter, 4.34 inch sidewall, 19 inch wheel, 9.65 inch tread width19″ wheel4.34″27.68″ overall9.65″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 245/45R19 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 35 tires in this size. Their published revolutions per mile work out to 26.9–27.1″ under load (below).

Real 245/45R19 tires measure 27.60–28.00″, against 27.68″ from the size code. They run both taller and shorter than the size code.

  1. Michelin Pilot Sport All-Season 428.00″ +0.32″
  2. General AltiMAX Arctic X27.70″ +0.02″
  3. General AltiMAX RT4527.70″ +0.02″
  4. General AltiMAX365 AW27.70″ +0.02″
  5. General G-MAX AS0727.70″ +0.02″
  6. General G-MAX RS27.70″ +0.02″
  7. Michelin Pilot Sport 3 · 227.70″ +0.02″
  8. Michelin Pilot Sport 4 · 327.70″ +0.02″
  9. Michelin Pilot Sport 4 S27.70″ +0.02″
  10. Michelin Pilot Sport 527.70″ +0.02″
  11. Michelin Primacy All Season · 327.70″ +0.02″
  12. Michelin Primacy MXM4 · 327.70″ +0.02″
  13. Michelin Primacy Tour A/S · 227.70″ +0.02″
  14. Toyo Proxes G-Tour27.70″ +0.02″
  15. Toyo Proxes Sport 227.70″ +0.02″
  16. BFGoodrich Advantage Control27.68″ −0.00″
  17. BFGoodrich g-Force COMP-2 A/S PLUS27.68″ −0.00″
  18. BFGoodrich g-Force Phenom T/A27.68″ −0.00″
  19. Michelin Primacy 327.68″ −0.00″
  20. Michelin X-Ice Snow27.68″ −0.00″
  21. Michelin X-Ice Snow+27.68″ −0.00″
  22. Toyo Celsius II27.68″ −0.00″
  23. Toyo Celsius Sport27.68″ −0.00″
  24. Toyo Extensa HP II27.68″ −0.00″
  25. Toyo Observe G3-Ice27.68″ −0.00″
  26. Toyo Proxes Sport A/S27.68″ −0.00″
  27. Michelin CrossClimate227.60″ −0.08″
Each bar runs from the size code's 27.68″ (the orange line) to the model's published height. The track spans 1.0″. Where a model comes in several load ranges, the darker part shows its range of heights; the number after the name is how many versions it comes in.
Height under load26.9–27.1″

Published revs per mile (743–751) mean the tire rolls like a 26.9–27.1″ tire on the vehicle. Use this for speedometer calibration.

Weight spread24.3–33.4 lb

The lightest (Toyo Extensa HP II, XL) is 9.1 lb lighter per corner than the heaviest (Michelin Primacy MXM4, XL).

35 tires in 245/45R19

Sort by the spec you care about.

LoadRevs/miSource
Toyo Extensa HP IIPerformanceXL · 102W27.6824.39.61,874751Spec page
Michelin Pilot Sport 4PerformanceXL · 102Y27.7024.59.51,874751Spec page
General AltiMAX365 AWTouringXL · 102V27.7024.911.01,874750Spec page
General G-MAX RSPerformanceXL · 102Y27.7025.210.01,874750Spec page
Michelin Pilot Sport 5PerformanceXL · 102(Y)27.7025.39.01,874751Spec page
Michelin Primacy All SeasonTouringXL · 102H27.7025.48.51,874751Spec page
Michelin Pilot Sport 4PerformanceXL · 102Y27.7025.79.51,874751Spec page
General AltiMAX RT45TouringXL · 102V27.7025.911.01,874750Spec page
Michelin Pilot Sport 4PerformanceXL · 102Y27.7026.29.01,874751Spec page
Michelin Pilot Sport 3PerformanceXL · 102Y27.7026.49.01,874751Spec page
Michelin Primacy All SeasonTouringXL · 102V27.7026.48.51,874751Spec page
Toyo Proxes Sport 2PerformanceXL · 102Y27.7026.59.21,874751Spec page
General G-MAX AS07PerformanceXL · 102W27.7026.610.01,874750Spec page
Michelin Primacy All SeasonTouringXL · 102V27.7026.78.51,874751Spec page
General AltiMAX Arctic XWinterXL · 102T27.7026.812.01,874750Spec page
Michelin Pilot Sport 4 SPerformanceXL · 102Y27.7026.99.01,874751Spec page
BFGoodrich g-Force Phenom T/APerformanceXL · 102Y27.6827.18.01,874751Spec page
Michelin Pilot Sport 3PerformanceXL · 102Y27.7027.29.01,874751Spec page
Michelin CrossClimate2All-seasonXL · 102V27.6027.410.01,874751Spec page
Michelin Pilot Sport All-Season 4PerformanceXL · 102Y28.0027.410.01,874743Spec page
Michelin Primacy MXM4TouringSL · 98W27.7027.410.01,653751Spec page
Michelin X-Ice Snow+WinterXL · 102H27.6827.410.51,874751Spec page
Toyo Proxes Sport A/SPerformanceXL · 102Y27.6827.69.61,874751Spec page
BFGoodrich Advantage ControlAll-seasonSL · 98V27.6827.710.51,653751Spec page
Michelin Primacy Tour A/STouringXL · 102W27.7027.88.51,874751Spec page
Michelin X-Ice SnowWinterXL · 102H27.6827.810.51,874751Spec page
Michelin Primacy Tour A/STouringSL · 98W27.7028.28.51,653751Spec page
Toyo Proxes G-TourXL · 102W27.7028.211.11,874751Spec page
Toyo Celsius SportPerformanceXL · 102Y27.6828.79.61,874751Spec page
BFGoodrich g-Force COMP-2 A/S PLUSPerformanceXL · 102W27.6830.09.01,653751Spec page
Toyo Celsius IITouringXL · 102V27.6830.211.31,874751Spec page
Toyo Observe G3-IceWinterXL · 102T27.6830.211.31,874751Spec page
Michelin Primacy 3PerformanceSL · 98Y27.6830.59.01,477751Spec page
Michelin Primacy MXM4TouringXL · 102V27.7031.39.51,874751Spec page
Michelin Primacy MXM4TouringXL · 102H27.7033.410.01,874751Spec page

Is 245/45R19 a 28-inch tire?

≈28″

Yes. The size code works out to 27.68″, and the 35 tires here publish 27.60–28.00″, so people call it a 28.

All 28-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 245/45R19Difference
295/35R1927.13-0.55″-2.0%
345/30R1927.15-0.53″-1.9%
235/45R1927.33-0.35″-1.3%
265/40R1927.35-0.33″-1.2%
355/30R1927.39-0.30″-1.1%
305/35R1927.41-0.28″-1.0%
275/40R1927.66-0.02″-0.1%
285/40R1927.98+0.30″+1.1%
255/45R1928.04+0.35″+1.3%
235/50R1928.25+0.57″+2.1%

How to read 245/45R19

How to read any tire size

245/45R19 102Y as printed on the tire sidewall, with each part numbered245/45R19 102Y123456
How 245/45R19 102Y is printed on the sidewall. It's the most common code among the 35 tires here (12 of them); tires in this size come in other load and speed ratings too.
1245Section width

245 mm across the widest point, or 9.65 inches. Every 245 size

245Aspect ratio

A percentage, not a measurement: the sidewall is 45% as tall as the tire is wide, which is 110.2 mm or 4.34 inches.

3RConstruction

Radial construction.

419Wheel diameter

Mounts on a 19-inch wheel. Approved wheel widths run 7.5″ to 9.0″.

5102Load index

Each tire carries up to 1,874 lb (850 kg) at its maximum pressure.

6YSpeed rating

Rated for up to 186 mph sustained.

XLExtra load

Printed after the size. In this size the XL tires carry up to 1,874 lb each and the standard-load tires up to 1,653 lb, as published.

SpecificationInchesMetric
Overall diameter27.68703 mm
Section width9.65245 mm
Sidewall height4.34110.2 mm
Circumference87.02,209 mm
Revolutions per mile (calculated, unloaded)728.6453 per km
Revolutions per mile (published by manufacturers)743–751462–467 per km
Approved wheel width7.5–9.0191–229 mm

Speedometer error after switching to 245/45R19

Your actual speed– mph

Questions about 245/45R19

What is 245/45R19 in inches?

27.68 inches tall, 9.65 inches wide, on a 19-inch wheel. Written in inches, that is roughly 27.7×9.6R19.

How much does a 245/45R19 tire weigh?

Between 24.3 lb and 33.4 lb for the 35 tires listed here. The lightest is the Toyo Extensa HP II (XL); the heaviest is the Michelin Primacy MXM4 (XL).

What wheel width do I need for 245/45R19?

Manufacturers approve 7.5–9.0″ wide wheels for this size.

How many revolutions per mile does a 245/45R19 make?

Published figures run 743–751 revolutions per mile. The calculated figure is 728.6, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 245/45R19 than 275/40R19?

0.02 inches taller on paper (27.68″ vs 27.66″), which raises the axle about 0.01″. Your speedometer will read about 0.1% slow.