2008 TESLA ROADSTER torque

Driving basics6-6
Driving your vehicle
pressure is applied. This allows you to
maintain steering control during heavy
braking on most road conditions.
During emergency braking conditions, the
ABS constantly monitors the speed of each
wheel and varies the brake pressure
according to the grip available.
The alteration of brake pressure can be felt as
a pulsing sensation through the brake pedal.
This demonstrates that ABS is operating and
is not a cause for concern. Keep firm and
steady pressure on the brake pedal while
experiencing the pulsation.Emergency braking
WARNING: DO NOT pump the foot
brake. ABS does this for you and by
pumping the foot brake yourself, you are
interfering with ABS operation which may
result in an increase in braking distance.
S
In an emergency, fully press the brake pedal
even when the road surface is slippery. ABS
will vary the braking pressure to each wheel
according to the amount of traction available.
This prevents the wheels from locking and
ensures that the vehicle stops as safely as
possible.
Note: ABS operates only when control of the
vehicle is jeopardized. It can not compensate
for driver error.ABS warning indicatorWhen the starter switch is turned to the ON
position, and also at frequent intervals while
driving, the ABS checks that all its
components are operating correctly. If a fault is detected, the warning
indicator in the instrument panel
flashes and the ABS shuts down. Contact
Tesla Motors as soon as possible.
The vehicle’s brakes remain fully operational
and are not affected by an ABS failure.
However, braking distances may increase and
wheels may lock under heavy braking.
Tra c t i o n c o n t ro l
WARNING: Traction control cannot
overcome the physical limitations of the
vehicle turning at too high a speed and
cannot prevent any accident which may
result.S
The traction control system constantly
monitors the difference in speed between the
front and rear wheels. If a loss of traction is
detected, it reduces torque to the rear wheels
to minimize wheel spin. When this happens,
you may notice the traction control warning
indicator on the instrument panel flash
quickly.
Traction control is automatically switched on
each time the starter switch is turned to the
ON position.Switching off traction controlIf required, traction control can be manually
switched off by pressing and holding the
switch on the center console for
approximately two seconds. When the
button is released, traction control will be
disabled. The warning indicator in the
instrument panel illuminates to inform
you that the vehicle is operating without the
advantages of traction control.
Under normal conditions, traction control
should be left on. The system should only be
switched off in circumstances where you
deliberately want the wheels to slip. As soon
as the circumstances requiring you to switch
traction control off have passed, press the
switch to turn traction control back on.BRAKE
TC
TC T CT C
T C
T C
D
R
N
TR0011
Roadster OHB.book Page 6 Th ursday, October 2, 2008 8:59 AM

Wheels10-6
Roadside emergencies
WheelsRemoving the wheel
WARNING: Never work under the
vehicle with a jack as the only means of
support. If the vehicle slips off the jack, you or
someone else could be seriously injured.
S
1. Apply the hand brake and remove the key from the starter switch.
2. Loosen each lug bolt one turn using the wheel bolt extension tool, the locking
wheel bolt adapter (located in the tool
kit), and a 17 mm socket and/or a wheel
wrench.
3. Position a jack at the jacking points identified on the vehicle (see Ve h i c l e
jacking points, page 10-11 ), and raise the
vehicle.
Caution: Jacking the vehicle from
any point other than those
specified can damage the vehicle.
4. Remove the lug bolts and store in a safe place. 5. Remove the wheel.
Caution: Place the wheel face up to
avoid scratching the surface.
Replacing the wheel
WARNING: Before replacing the wheel,
inspect the mating faces of the wheel
and hub. Remove any corrosion, dirt or
foreign material. Fitting the wheels without
correct surface-to-surface contact can cause
the wheel bolts to loosen, resulting in a loss of
vehicle control.
S
1. Position the wheel on the hub.
2. Fit the wheel bolts and tighten until the wheel is firmly seated against the hub.
3. Lower the vehicle and remove the jack.
4. Using a torque wrench, fully tighten the bolts in the sequence shown to 77 lbft
(105 Nm). 5. Return the wheel bolt extension tool and
the locking wheel bolt adapter to the tool
kit.
6. Check and tighten the wheel bolts every 1000 miles (1600 km).
TR0055
1
4
3
5
2
1
4
3
5
2
TR0151
Roadster OHB.book Page 6 Th ursday, October 2, 2008 8:59 AM

Wheels and tires11-4
Technical specifications
Wheels and tiresSpecifications and tire
pressuresWheel type
Location
Size
Forged light alloy - directional Front 6J x 16 Rear7.5J x 17
Tire type
Location
Size
Yokohama Neova AD07 LTS - directional Front 175/55 R16 Rear225/45 R17
Road wheel bolt torque 77 lbf.ft 105 Nm
Note: For details on where to position a jack to lift the vehicle, see Vehicle jacking points, page 10-11.Tire
Tire Pressure
Recommended
Comfort setting
Front 30 PSI (207 kPa)25 PSI (172 kPa)
Rear 40 PSI (276 kPa)36 PSI (248 KPa)
Note: The recommended tire pressures have been calculated to provide the best combination of vehicle range, tire life, ride comfort a nd road
handling.
Driving the vehicle with the tires inflated to the comfort setti ng will improve ride comfort and road handling, but will decrea se vehicle range (the
number of miles you can travel on a charge) and Battery life (see the New Vehicle Limited Warranty, provided in your owners pac kage, for details
on expected range of the Battery).
Roadster OHB.book Page 4 Th ursday, October 2, 2008 8:59 AM

Subsystem specifications
11-17
Technical specifications
Subsystem specificationsMotor
TransmissionSteeringType AC induction motor, air-cooled, with variable frequency drive
Rating 375 Volts
Maximum speed 14,000 rpm
Maximum net power 248 HP (185 kW) @ 5500-6800 rpm
Maximum net torque 277 ft/lb (376 Nm) @ 0-4500 rpm
Efficiency 92% peak, 85% at max powerType Single speed fixed gear with electrically-actuated parking lock mechanism and
mechanical lubrication pump
Overall final drive ratio 8.27:1
Reverse gear Reverse direction of motor, limited to 15 mph
Final drive ratio 2.65:1TypeRack and pinion
Number of turns lock to lock 2.8
Turning circle (curb to curb) 36’ 3” (11.05 metres)
Roadster OHB.book Page 17 Thursday, October 2, 2008 8:59 AM