UK · EU reference Tyre Pressure

235/60R18 · SUV / crossover · PSI

235/60R18 PSI chart (35 psi planning figure)

Size
235/60R18
Class
SUV / crossover
Planning PSI
35
Planning bar
2.41

psi

35

2.41 bar · 241 kPa · SUV / crossover planning figure

235/60R18 · 35 psi · 2.41 bar · 241 kPa — estimates. Placard wins.

PSI is the garage-hose number. For 235/60R18 a typical SUV / crossover planning figure is 35 psi cold — about 2.41 bar or 241 kPa. Plus-size 18-inch SUV. These rows are estimates interpolated for the size, not OEM for a named VIN.

Estimated 235/60R18 pressure by load

Load moves the rear first on a SUV / crossover. If the factory placard already has a laden column, use that — not this sketch for 235/60R18.

ConditionFront (est.)Rear (est.)
Driver only / unladen35 psi / 2.41 bar / 241 kPa36 psi / 2.48 bar / 248 kPa
Typical occupancy36 psi / 2.48 bar / 248 kPa38 psi / 2.62 bar / 262 kPa
Motorway + luggage (sketch)37 psi / 2.55 bar / 255 kPa39 psi / 2.69 bar / 269 kPa

PSI, bar and kPa

Convert around the 235/60R18 band. 2.41 bar is about 35 psi — not 23, not 33 unless the maths says so.

PSIBarkPa
312.14214
322.21221
332.28228
342.34234
352.41241
362.48248
372.55255
382.62262
392.69269
402.76276
412.83283
422.90290
432.96296
443.03303
453.10310
463.17317
473.24324

What 235/60R18 means

Read 235/60R18 as width / aspect R rim. Nothing in the size string is a pressure. Pressure lives on the car, not moulded as 205 or 55.

Plus-size 18-inch SUV. Rim diameter 18 in; section 235 mm. Estimates on this page assume a typical load index for the SUV / crossover class.

Placard versus sidewall

This website maps size searches such as “235/60R18 psi”. It does not replace the VIN label. If the two disagree, the label wins.

Cars often seen on 235/60R18

These catalogue models are often seen on 235/60R18 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.

Toyota RAV4Land Rover DiscoveryFord Kuga

How to set 235/60R18

  1. Park so the 235/60R18 tyres are cold (three hours, or less than about a mile).
  2. Read the door-pillar placard for that car — not the 235/60R18 sidewall maximum.
  3. If the sticker is missing, 35 psi / 2.41 bar is only a SUV / crossover planning figure for this size.
  4. Set all four with a calibrated gauge. A 3 psi miss on one corner shows up as a wander.
  5. Refit valve caps and reset TPMS if the handbook asks for a relearn.

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 35 psi as a 20 °C baseline for 235/60R18.

AmbientGaugeBarkPaNote
−5 °C (hard frost)32 psi2.21 bar221 kPaGauge reads low; do not overfill once warm
0 °C33 psi2.28 bar228 kPaGauge reads low; do not overfill once warm
8 °C (UK winter morning)34 psi2.34 bar234 kPaGauge reads low; do not overfill once warm
20 °C (set cold here)35 psi2.41 bar241 kPaBaseline for this size sketch
30 °C37 psi2.55 bar255 kPaDo not bleed a hot 235/60R18
38 °C (heatwave tarmac)38 psi2.62 bar262 kPaDo not bleed a hot 235/60R18

Keep 235/60R18 on the printed band for that car; 35 psi is a size sketch, not a second VIN label.

Questions about 235/60R18

Is 235/60R18 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.

Can I run 235/60R18 at a lower pressure for comfort?

Not as a habit. A soft 235/60R18 cooks the shoulders and dulls steering. Keep load index and stay on the placard.

When does TPMS warn on 235/60R18?

Direct TPMS typically flags about 25% below target — near 26 psi if you were aiming at 35. Fill to the sticker, not to the lamp.

What is 235/60R18 in bar?

35 psi is 2.41 bar. Add a tenth of a bar if the placard’s laden column is higher, which is common on vans that wear this size.

Is the sidewall number correct for 235/60R18?

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

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