UK · EU reference Tyre Pressure

245/55R19 · SUV / crossover · Bar

Recommended bar for 245/55R19

Size
245/55R19
Class
SUV / crossover
Planning PSI
36
Planning bar
2.48

bar

2.48

36 psi · 248 kPa · not a second factory sticker

245/55R19 · 36 psi · 2.48 bar · 248 kPa — estimates. Placard wins.

A 245/55R19 C-type or LT carcass can live far above a hatchback bar figure. This page’s 2.48 bar sketch is for the SUV / crossover class, not every car that can physically mount the tyre. Under-inflation cooks the shoulders of a 245/55R19; over-inflation wears the centre rib and bangs every cat’s eye.

Bar, PSI and kPa

1 bar ≈ 14.5 psi; 1 psi ≈ 6.89 kPa. Planning midpoint for 245/55R19: 36 psi = 2.48 bar = 248 kPa.

BarPSIkPa
2.2132221
2.2833228
2.3434234
2.4135241
2.4836248
2.5537255
2.6238262
2.6939269
2.7640276
2.8341283
2.9042290
2.9643296
3.0344303
3.1045310
3.1746317
3.2447324
3.3148331

Estimated 245/55R19 pressure by load

Plus-sizing to 245/55R19 from a taller OEM tyre usually keeps the same placard if the load index is equal or higher.

ConditionFront (est.)Rear (est.)
Driver only / unladen36 psi / 2.48 bar / 248 kPa36 psi / 2.48 bar / 248 kPa
Typical occupancy36 psi / 2.48 bar / 248 kPa37 psi / 2.55 bar / 255 kPa
Motorway + luggage (sketch)37 psi / 2.55 bar / 255 kPa38 psi / 2.62 bar / 262 kPa

Placard versus sidewall

If a forum says “all 245/55R19 run 36 psi”, ignore it. A Qashqai and a Golf can share a size and not share a sticker.

What 245/55R19 means

245/55R19 means a 245 millimetre section width, a sidewall that is 55 percent of that width, on a 19-inch rim. The R is radial construction.

Low-profile 19-inch SUV. Rim diameter 19 in; section 245 mm. Estimates on this page assume a typical load index for the SUV / crossover class.

Cars often seen on 245/55R19

These catalogue models are often seen on 245/55R19 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.

Mazda CX-5Hyundai TucsonLand Rover Discovery

How to set 245/55R19

  1. Measure before the school run, not after the motorway.
  2. Write LF / RF / RR / RL. Do not keep 245/55R19 numbers in your head.
  3. Add air in short bursts toward the placard, using 36 psi only as a map.
  4. If one 245/55R19 is 4 psi down, hunt for a nail before you blame the weather.
  5. Log date, ambient temperature and the four readings.

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 36 psi as a 20 °C baseline for 245/55R19.

AmbientGaugeBarkPaNote
−5 °C (hard frost)33 psi2.28 bar228 kPaGauge reads low; do not overfill once warm
0 °C34 psi2.34 bar234 kPaGauge reads low; do not overfill once warm
8 °C (UK winter morning)35 psi2.41 bar241 kPaGauge reads low; do not overfill once warm
20 °C (set cold here)36 psi2.48 bar248 kPaBaseline for this size sketch
30 °C38 psi2.62 bar262 kPaDo not bleed a hot 245/55R19
38 °C (heatwave tarmac)39 psi2.69 bar269 kPaDo not bleed a hot 245/55R19

If the door sticker and this 245/55R19 page disagree, the sticker wins.

Questions about 245/55R19

What is 245/55R19 in kPa?

248 kPa is the planning midpoint (100 kPa = 1 bar). 255 kPa is one PSI higher.

When does TPMS warn on 245/55R19?

Direct TPMS typically flags about 25% below target — near 27 psi if you were aiming at 36. Fill to the sticker, not to the lamp.

Is the sidewall number correct for 245/55R19?

No. Sidewall PSI or kPa is a maximum for the carcass. Operating pressure is the door-pillar placard.

Can I run 245/55R19 at a lower pressure for comfort?

Not as a habit. A soft 245/55R19 cooks the shoulders and dulls steering. Keep load index and stay on the placard.

Is 245/55R19 the same as a plus-size swap?

Only if that is the size you fitted. Overall diameter should stay close to OEM. Pressure still follows the car, with load index at or above original.

Handbook: placard · bar vs PSI · cold inflation · all sizes