Shelby · F-250 · Rear

Rear axle PSI and bar on the Shelby F-250

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

psi rear

2.31 bar · 231 kPa at the rear axle

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

Loaded F-250 rears often need the sticker’s second column, not a copy of the front 32-35 psi figure. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed Shelby tyre. Commercial and load-biased bodies like this pickup / double-cab often need a higher rear; LT or C-type sizes such as 275/65R18 are not filled like a Fiesta.

Shelby F-250 placard versus sidewall

The tyre-information placard on a Shelby F-250 sits on the driver’s door pillar (sometimes the fuel-filler flap). Catalogue figures here are a general band: 32-35 / 32-35 psi.

Estimated pressure by tyre size (LT265/70R17 and others)

Planning cold pressures for sizes often seen on a pickup / double-cab. This F-250 sample opens with LT265/70R17, then 255/65R17 and 275/65R18.

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

Pressure against load

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	35 psi / 2.41 bar	36 psi / 2.48 bar
Payload / towing	36 psi / 2.48 bar	38 psi / 2.62 bar

A family pickup / double-cab with a boot full of luggage should use the laden rear figure if Ford, VW or Mercedes printed one. Otherwise the modest steps in the load table are only a sketch for this F-250.

How to set the F-250

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep F-250 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.

PSI, bar and kPa

PSI-led conversions for the Shelby F-250 band (32-35 / 32-35).

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

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this F-250.

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

Shelby notes

No special Shelby exception: the F-250 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 Shelby F-250 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.

If the Shelby sticker and this page disagree, the sticker wins.

Other Shelby models

GT Series 1 F-150 Mustang Super Snake Mustang GT-H F-150 Super Snake

Questions about this F-250

Front versus rear on the Shelby F-250?

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 Shelby F-250?

No. Sidewall PSI is a maximum. The F-250 placard is the operating target, near 32-35/32-35 psi.

What tyre pressure should a Shelby F-250 use?

Catalogue reference is 32-35 psi front and 32-35 psi rear (2.2-2.4 / 2.2-2.4 bar), cold. Confirm on the door-pillar placard.

What is that in bar and kPa for the F-250?

Mid-points are about 2.31 bar (231 kPa) front and 2.31 bar (231 kPa) rear.

Should I bleed pressure after a motorway run?

No. Heat raises the gauge. Set cold only. Bleeding a hot tyre leaves it low the next morning.

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