Dutton · Sierra Series 2 · Bar

Dutton Sierra Series 2 tyre pressure in bar

Drivetrain: rear-wheel drive
Body: pickup / double-cab
PSI F / R: 32-35 / 32-35
Bar F / R: 2.2-2.4 / 2.2-2.4

bar

2.31 / 2.31

32-35 / 32-35 psi · 231 / 231 kPa

32-35 psi F · 32-35 psi R · 2.2-2.4 / 2.2-2.4 bar · 231/231 kPa

A rear-wheel drive Dutton Sierra Series 2 still wants even corners. 2.2-2.4 vs 2.2-2.4 is an axle split, not a left-right split. Size estimates on this page include 245/70R16, 285/70R17 and LT245/75R16 — interpolated from the catalogue midpoint, not a second factory sticker. Commercial and load-biased bodies like this pickup / double-cab often need a higher rear; LT or C-type sizes such as LT245/75R16 are not filled like a Fiesta.

Bar, PSI and kPa

Bar-led conversions around the Dutton Sierra Series 2. 2.2-2.4 bar is not “32-35 divided by ten”.

Bar	PSI	kPa
2.07	30	207
2.21	32	221
2.28	33	228
2.31	33.5	231
2.41	35	241
2.48	36	248
2.62	38	262
2.76	40	276
3.03	44	303
3.45	50	345
4.14	60	414

Dutton Sierra Series 2 placard versus sidewall

Sidewall PSI is a carcass maximum. Recommended operating pressure for this Sierra Series 2 is the pillar sticker, near 34/34 psi.

Estimated pressure by tyre size (245/70R16 and others)

Planning cold pressures for sizes often seen on a pickup / double-cab. This Sierra Series 2 sample opens with 245/70R16, then 285/70R17 and LT245/75R16.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
245/70R16	36	38	2.48	2.62	248	262	Common 16-inch all-terrain
285/70R17	38	41	2.62	2.83	262	283	Wide all-terrain
LT245/75R16	42	46	2.9	3.17	290	317	LT-metric, higher load
275/65R18	37	40	2.55	2.76	255	276	Plus-size 18-inch
LT265/70R17	42	48	2.9	3.31	290	331	LT 17-inch
235/75R15	35	37	2.41	2.55	241	255	Older compact truck
255/65R17	37	39	2.55	2.69	255	269	Highway 17-inch
265/70R17	37	39	2.55	2.69	255	269	Typical 17-inch load tyre

Load notes

Load moves the rear of a pickup / double-cab first. If the factory placard already has a “laden” column, use that instead of these sketches.

Condition	Front (est.)	Rear (est.)
Driver only	34 psi / 2.34 bar	34 psi / 2.34 bar
Full occupancy	34 psi / 2.34 bar	35 psi / 2.41 bar
Payload / towing	35 psi / 2.41 bar	36 psi / 2.48 bar

How to set the Sierra Series 2

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep Sierra Series 2 numbers in your head.
Add air in short bursts toward 34 psi (2.31 bar) front and 34 psi rear.
If one corner is 4 psi down, hunt for a nail before you blame the weather.
Log date, ambient temperature and the four readings.

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this Sierra Series 2.

Ambient	Gauge (front mid)	Bar	kPa	Note
−5 °C (hard frost)	31 psi	2.14 bar	214 kPa	Gauge reads low; do not overfill once warm
0 °C	32 psi	2.21 bar	221 kPa	Gauge reads low; do not overfill once warm
8 °C (UK winter morning)	33 psi	2.28 bar	228 kPa	Gauge reads low; do not overfill once warm
20 °C (set cold here)	34 psi	2.34 bar	234 kPa	Baseline
30 °C	36 psi	2.48 bar	248 kPa	Do not bleed a hot tyre
38 °C (heatwave tarmac)	37 psi	2.55 bar	255 kPa	Do not bleed a hot tyre

Dutton notes

No special Dutton exception: the Sierra Series 2 uses the door-pillar placard. Size estimates on this page only help if you have left the original load index behind.

Spare and inflator kit

A matching full-size spare on the Dutton Sierra Series 2 usually follows the higher axle (often the rear, near 32-35 psi). A space-saver is commonly 60 psi / 4.1 bar — read that tyre’s own sidewall. An inflator kit is not a spare; check the sealant date.

A cheap gauge and a monthly habit will do more for this Sierra Series 2 than nitrogen upsells.

Other Dutton models

Malaga Melos Rico Phaeton Series 4 Phaeton Series 3 Cantera Phaeton Series 2 P1

Questions about this Sierra Series 2

How often should I check a Sierra Series 2?

Monthly, before a long trip, and after a 10 °C weather swing. Include a full-size spare.

When does TPMS warn on a Dutton Sierra Series 2?

Direct TPMS typically flags about 25% below placard — near 25 psi on this row. Fill to the sticker, not to the lamp.

What PSI if I plus-size toward LT245/75R16?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 245/70R16, 285/70R17 and LT245/75R16 as a planning band.

Front versus rear on the Dutton Sierra Series 2?

This row is 32-35 F / 32-35 R. Even when they match, a laden rear can justify a higher number if the sticker prints one.

Is the sidewall number correct on a Dutton Sierra Series 2?

No. Sidewall PSI is a maximum. The Sierra Series 2 placard is the operating target, near 32-35/32-35 psi.

Handbook: placard · bar vs PSI · front vs rear · cold inflation