245/35R19 tire size — the lower of two 245 mm stacks
A 3.38 in sidewall wrapped around a 19-inch wheel, and the tallest of three codes that measure the same.
Metric notation · Performance and ultra-high performance
- Overall diameter
- 25.75 in
- 654 mm
- Section width
- 9.65 in
- 245 mm
- Sidewall height
- 3.38 in
- 86 mm
- Aspect ratio
- 35%
- sidewall as a share of width
- Wheel diameter
- 19 in
- the hole in the middle
- Circumference
- 80.9 in
- 2055 mm
- Revolutions per mile
- 783.2
- geometric, not measured
- Revolutions per km
- 486.6
- geometric, not measured
- Typical load index
- 88–104
- 1235–1984 lb per tire
Low-profile sizes hold less air for their width, so the same vehicle weight needs a higher reference inflation. Extra Load construction is common in this class, and that is what lifts the index band — not any change in the casing size.
The load-index range shown is the band this CLASS of size is typically produced in — not a list of what is in stock for this exact size today. Load index and speed symbol are printed on the sidewall of the specific tire you are holding, and the required minimum is on the placard of the specific vehicle you are fitting. Read both.
Nearest real sizes in imperial notation, same wheel
Compare any two sizes, including ones this site has no page for, in the comparison tool.
Performance saloons and coupes on their largest available wheels, and a substantial aftermarket population on compact and mid-size cars.
Three codes, one rolling diameter, three wheels
| Size | Wheel | Diameter | Sidewall |
|---|---|---|---|
| 245/45R17 | 17 in | 25.68 in | 4.34 in |
| 245/40R18 | 18 in | 25.72 in | 3.86 in |
| 245/35R19 | 19 in | 25.75 in | 3.38 in |
Total spread: 0.07 in, or 0.28% from bottom to top. Section width is 9.65 in throughout because the first three digits never change.
This is the lower of two such stacks at 245 mm in the catalogue. The other runs 245/45R18, 245/40R19 and 245/35R20, one inch of wheel higher at every step, and holds 26.7 in. Between the two stacks there is a full inch of diameter and no overlap.
What the extra wheel buys and costs
Each rung up trades roughly half an inch of sidewall for one inch of wheel. Going from the 17-inch entry to this one takes the casing between rim and road from 4.34 in to 3.38 in, with no change in rolling diameter, section width or gearing.
Whether that is worth doing is a question about a particular car and a particular set of roads. What is not in question is that the speedometer will read the same either way.
The rest of the 19-inch performance range
255/35R19 is 0.28 in taller at 26.03 in and 0.39 in wider. 275/35R19 is 0.83 in taller at 26.58 in. At a 35-series aspect ratio each 10 mm of section adds only 0.28 in of height — the smallest width step of any multi-width family in this catalogue.
The cleanest one-inch pair in the catalogue
245/35R20 carries the identical section width and the identical aspect ratio: 9.65 in and 35. Its sidewall is 3.38 in, the same figure as this size, because sidewall depends on those two numbers and on nothing else.
So the entire difference between the two codes is the wheel, and the entire difference in overall diameter is 1.00 in — not approximately, exactly. Circumference goes from 80.9 in to 84.0 in and revolutions per mile from 783.2 to 753.9, both consequences of that single inch.
It is a useful pair to keep in mind when a fitment list offers the same tire on two wheel sizes. Where the aspect ratio drops with the wheel, height holds; where it does not, height moves by exactly what the wheel moved, and every downstream figure moves with it.
Class: Performance and ultra-high performance. Every figure above is computed from the size code, not stored — see how these numbers are calculated.