BYD · F8 · Recommended

Recommended tyre pressure for a BYD F8

Drivetrain: front-wheel drive
Body: passenger car
PSI F / R: 32-35 / 32-35
Bar F / R: 2.2-2.4 / 2.2-2.4

psi

34 / 34

Catalogue mid-points, front / rear · 2.2-2.4 / 2.2-2.4 bar

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

Recommended pressure means the vehicle placard, not the tyre sidewall. For a BYD F8 the catalogue proxy is 32-35/32-35 psi (2.2-2.4/2.2-2.4 bar). Size estimates on this page include 255/40R17, 275/35R18 and 275/30R19 — interpolated from the catalogue midpoint, not a second factory sticker.

How to set the F8

Park the BYD F8 for at least three hours (cold tyres).
Use a calibrated gauge, not the only meter on a forecourt hose.
Set the placard for that axle — about 32-35 psi / 2.2-2.4 bar front and 32-35 psi / 2.2-2.4 bar rear on this catalogue row.
Recheck all four. A 2 psi miss on a front-wheel drive F8 is enough to feel a pull.
Refit valve caps and reset TPMS if the handbook asks for a relearn.

BYD F8 placard versus sidewall

Sidewall PSI is a carcass maximum. Recommended operating pressure for this F8 is the pillar sticker, near 34/34 psi.

Estimated pressure by tyre size (255/40R17 and others)

Planning cold pressures for sizes often seen on a passenger car. This F8 sample opens with 255/40R17, then 275/35R18 and 275/30R19.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
255/40R17	35	36	2.41	2.48	241	248	Rear stagger 17-inch
275/35R18	36	37	2.48	2.55	248	255	Wide rear
275/30R19	36	37	2.48	2.55	248	255	Rear 19-inch
225/40R18	35	35	2.41	2.41	241	241	Front 18-inch
225/45R17	34	35	2.34	2.41	234	241	Front sport size
235/35R19	36	36	2.48	2.48	248	248	Front 19-inch
255/35R18	35	36	2.41	2.48	241	248	Rear stagger 18-inch
245/40R18	35	36	2.41	2.48	241	248	Square-ish sport

PSI, bar and kPa

PSI-led conversions for the BYD F8 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

Pressure against load

Load moves the rear of a passenger car 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
Motorway + luggage	35 psi / 2.41 bar	36 psi / 2.48 bar

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this F8.

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

BYD notes

No special BYD exception: the F8 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 BYD F8 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 F8 than nitrogen upsells.

Other BYD models

F1 F3 Sealion 7 Atto 2 e6 F6 Seal 6 Seal U

Questions about this F8

What tyre pressure should a BYD F8 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.

Front versus rear on the BYD F8?

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.

When does TPMS warn on a BYD F8?

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 275/30R19?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 255/40R17, 275/35R18 and 275/30R19 as a planning band.

Is the sidewall number correct on a BYD F8?

No. Sidewall PSI is a maximum. The F8 placard is the operating target, near 32-35/32-35 psi.

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