tireheight.com

275/40R17 in inches

A 275/40R17 tire is 25.7″ tall and 10.8″ wide, and fits a 17″ wheel. In inches it is written 25.7×10.8R17.

Diameter25.66″
Width10.83″
Sidewall4.33″
275/40R17 drawn to scale: 25.66 inch diameter, 4.33 inch sidewall, 17 inch wheel, 10.83 inch tread width17″ wheel4.33″25.66″ overall10.83″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 275/40R17 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 13 tires in this size. Their published revolutions per mile work out to 24.8–25.1″ under load (below).

Real 275/40R17 tires measure 25.60–25.79″, against 25.66″ from the size code. They run both taller and shorter than the size code.

  1. Toyo Proxes TQ25.79″ +0.13″
  2. General G-MAX AS0725.70″ +0.04″
  3. General G-MAX RS25.70″ +0.04″
  4. Michelin Pilot Sport All-Season 425.70″ +0.04″
  5. Toyo Proxes RA125.70″ +0.04″
  6. Toyo Proxes Sport R25.70″ +0.04″
  7. BFGoodrich g-Force COMP-2 A/S PLUS25.67″ +0.01″
  8. Toyo Proxes R25.67″ +0.01″
  9. Toyo Extensa HP II25.67″ +0.01″
  10. Toyo Proxes R888R25.67″ +0.01″
  11. Toyo Proxes RR25.67″ +0.01″
  12. Toyo Proxes R1R25.60″ −0.06″
  13. Michelin Pilot Sport PS225.60″ −0.06″
Each bar runs from the size code's 25.66″ (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 load24.8–25.1″

Published revs per mile (805–814) mean the tire rolls like a 24.8–25.1″ tire on the vehicle. Use this for speedometer calibration.

Weight spread24.1–29.5 lb

The lightest (General G-MAX RS, SL) is 5.4 lb lighter per corner than the heaviest (BFGoodrich g-Force COMP-2 A/S PLUS, SL).

13 tires in 275/40R17

Sort by the spec you care about.

LoadRevs/miSource
General G-MAX RSPerformanceSL · 98W25.7024.110.01,653810Spec page
Toyo Proxes RPerformanceSL · 98W25.6725.63.61,653809Spec page
General G-MAX AS07PerformanceSL · 98W25.7026.010.01,653810Spec page
Michelin Pilot Sport All-Season 4PerformanceSL · 98Y25.7026.310.01,653810Spec page
Toyo Extensa HP IIPerformanceSL · 98W25.6726.59.91,653809Spec page
Michelin Pilot Sport PS2PerformanceSL · 98(Y)25.6026.59.51,653814Spec page
Toyo Proxes R1RPerformanceSL · 98W25.6026.58.21,653811Spec page
Toyo Proxes Sport RPerformanceSL · 98W25.7027.37.21,653809Spec page
Toyo Proxes TQPerformanceLL25.7927.66.31,433805Spec page
Toyo Proxes RRPerformanceSL25.6727.63.61,653809Spec page
Toyo Proxes R888RPerformanceSL · 98W25.6728.26.31,653809Spec page
Toyo Proxes RA1PerformanceSL25.7029.08.01,653809Spec page
BFGoodrich g-Force COMP-2 A/S PLUSPerformanceSL · 98W25.6729.59.01,653810Spec page

Is 275/40R17 a 26-inch tire?

≈26″

Yes. The size code works out to 25.66″, and the 13 tires here publish 25.60–25.79″, so people call it a 26.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 275/40R17Difference
235/45R1725.33-0.33″-1.3%
265/40R1725.35-0.31″-1.2%
215/50R1725.46-0.20″-0.8%
245/45R1725.68+0.02″+0.1%
315/35R1725.68+0.02″+0.1%
225/50R1725.86+0.20″+0.8%
205/55R1725.88+0.22″+0.8%
255/45R1726.04+0.37″+1.5%
195/60R1726.21+0.55″+2.1%
335/35R1726.23+0.57″+2.2%

How to read 275/40R17

How to read any tire size

275/40R17 98W as printed on the tire sidewall, with each part numbered275/40R17 98W123456
How 275/40R17 98W is printed on the sidewall. It's the most common code among the 13 tires here (8 of them); tires in this size come in other load and speed ratings too.
1275Section width

275 mm across the widest point, or 10.83 inches. Every 275 size

240Aspect ratio

A percentage, not a measurement: the sidewall is 40% as tall as the tire is wide, which is 110.0 mm or 4.33 inches.

3RConstruction

Radial construction.

417Wheel diameter

Mounts on a 17-inch wheel. Approved wheel widths run 9.0″ to 11.0″.

598Load index

Each tire carries up to 1,653 lb (750 kg) at its maximum pressure.

6WSpeed rating

Rated for up to 168 mph sustained.

SpecificationInchesMetric
Overall diameter25.66652 mm
Section width10.83275 mm
Sidewall height4.33110.0 mm
Circumference80.62,048 mm
Revolutions per mile (calculated, unloaded)785.9488 per km
Revolutions per mile (published by manufacturers)805–814500–506 per km
Approved wheel width9.0–11.0229–279 mm

Speedometer error after switching to 275/40R17

Your actual speed– mph

Questions about 275/40R17

What is 275/40R17 in inches?

25.66 inches tall, 10.83 inches wide, on a 17-inch wheel. Written in inches, that is roughly 25.7×10.8R17.

How much does a 275/40R17 tire weigh?

Between 24.1 lb and 29.5 lb for the 13 tires listed here. The lightest is the General G-MAX RS (SL); the heaviest is the BFGoodrich g-Force COMP-2 A/S PLUS (SL).

What wheel width do I need for 275/40R17?

Manufacturers approve 9.0–11.0″ wide wheels for this size.

How many revolutions per mile does a 275/40R17 make?

Published figures run 805–814 revolutions per mile. The calculated figure is 785.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 275/40R17 than 215/50R17?

0.20 inches taller on paper (25.66″ vs 25.46″), which raises the axle about 0.10″. Your speedometer will read about 0.8% slow.