wheel torque Lexus IS F 2011 Owner's Manual

448
5-2. Steps to take in an emergency
IS F_EE
Installing the spare tire
Remove any dirt or foreign
matter from the wheel contact
surface.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is
in motion, and the tire may
come off the vehicle.
Install the spare tire and loosely
tighten each wheel nut by hand
by approximately the same
amount.
Tighten the nuts until the
tapered portion comes into
loose contact with the disc
wheel seat.
Lower the vehicle.
Firmly tighten each nut two or
three times in the order shown
in the illustration.
Tightening torque:
103 N•m (10.5 kgf•m, 76 ft•lbf)
STEP1
STEP2Tapered portion
Disc wheel
seat
STEP3
STEP4

5
451
5-2. Steps to take in an emergency
When trouble arises
IS F_EE
CAUTION
Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the
vehicle suddenly falling off the jack.
Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.
Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replac-
ing tires on this vehicle.
Always check that the tire jack is securely set to the jack point.
Do not put any part of your body under the vehicle while it is supported
by the jack.
Do not start or run the engine while your vehicle is supported by the jack.
Do not raise the vehicle while someone is in it.
When raising the vehicle, do not put an object on or under the jack.
Do not raise the vehicle to a height greater than that required to replace the
tire.
Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one work-
ing on or near the vehicle may be injured.
Replacing a flat tire
Do not attach a heavily damaged wheel ornament, as it may fly off the
wheel while the vehicle is moving.
Failure to follow these precautions could cause the wheel nuts to loosen
and the tire to fall off, resulting in death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing a
serious accident. Remove any oil or grease from the wheel bolts or
wheel nuts.
• Have the wheel nuts tightened with a torque wrench to 103 N
•m (10.5
kgf
•m, 76 ft•lbf) as soon as possible after changing wheels.

480
6-1. Specifications
IS F_EE
Tires and wheels
Tire size
Front tires: 225/40R19 93Y
Rear tires: 255/35R19 96Y
Spare tire: T135/70R18 103M
Tire inflation pressure
(front and rear)
(Recommended cold tire
inflation pressure)
Vehicle
speedFront wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than
250 km/h
(155 mph)
320 (3.2, 46)320 (3.2, 46)
From 210
km/h (130
mph) to 250
km/h (155
mph)
300 (3.0, 44)300 (3.0, 44)
210 km/h
(130 mph) or
less
250 (2.5, 36)250 (2.5, 36)
Tire inflation pressure
(spare)
(Recommended cold tire
inflation pressure)
420 kPa (4.2 kgf/cm2 or bar, 60 psi)
Wheel size
Ty p e A
Front wheels: 19  8J
Rear wheels: 19  9J
Spare wheel: 18  4T
Ty p e B
Front wheels: 19  8 1/2 J
Rear wheels: 19  9 1/2 J
Spare wheel: 18  4T
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)