Audi TT (2007 year). Manual — part 225

33

Rear axle brake caliper

16" for all four-cylinder models
17" for all six-cylinder models

380_073

34

Steering system

The electromechanical steering system EPS which
has proved successful in the Audi A3 is also
featured in the Audi TT Coupé ‘07. Various detail
modifications have been made to adapt the steering
system for use in the TT Coupé.

A mechanical steering column is fitted in the
Audi TT Coupé ‘07. The steering column is basically
identical in design and function to the steering
column in the Audi A3.
Various detail modifications have been made to
adapt the steering column for use in the TT Coupé.

A redesigned steering wheel is used in the
Audi TT Coupé ‘07. All models are fitted with three-
spoke leather-bound steering wheels with an
integral two-stage airbag module. In addition to the
standard version, combinations are also available of
multifunction, Tiptronic and leather stitching in
various colours.

Suspension system

380_069

380_067

380_068

35

Audi magnetic ride

The Audi TT is the first Audi to feature Audi magnetic ride - a new semi-active suspension system with
magneto-rheologically controlled dampers. A sport or comfort damper set-up can be activated at the touch of
a button.

380_064

Audi magnetic ride improves driving dynamics and
driving comfort for the following reasons:

–

reduced body movement (pitch and roll)

–

optimised vibration behaviour

–

improved road-holding

–

improved handling

Damper adjustment button
E387

ECD control unit (electronically
controlled damping)
J250

Vehicle level sender
G76-78, G289

Shock absorber damping
adjustment warning lamp
K189

Damper adjustment valve
N336-339

Reference

For details of the design and function
of the suspension system, refer to
Self-Study Programme 381
Audi TT Coupé ‘07 - Suspension
System.

36

Suspension system

380_075

SST tyres have run-flat capability because of their modified design compared to conventional tyres.
Much stiffer tyre sidewalls enable the vehicle to drive on for up to 50 km at a maximum speed of 80 kph even
after a total loss of pressure.

Special wheels are used for the SST tyres due to the modified tyre geometry. The special 17" wheels on the
Audi TT Coupé ‘07 can be used both for conventional tyres and for SST tyres. In the case of the 18" wheels,
conventional tyres are available in combination with conventional rims. SST tyres are always combined with
the low tyre pressure indicator.

* also available optionally as SST wheel

Engine

4-cylinder

6-cylinder

Basic wheels

Optional wheels

Winter wheels

7.5J x 126 ET 45 (1)
Cast aluminium
wheel
painted
225/55 R 16

8.5J x 17 ET 50 (2)
Forged aluminium
wheel
painted
245/45 R 17 *

8J x 17 ET 47 (3)
Cast aluminium
wheel
painted
225/50 R 17 *

9J x 18 ET 52 (4)
Cast aluminium
wheel
painted
245/40 R 18 *

9J x 18 ET 52 (5)
Cast aluminium
wheel
polished
bi-color
245/40 R 18 *

8.5J x 17 ET 50 (6)
Cast aluminium
wheel
painted
245/40 R 18 *

7J x 16 ET 47 (7)
Cast aluminium
wheel
painted
225/55 R 16

7J x 17 ET 47 (8)
Forged aluminium
wheel
painted
225/50 R 17 *

9J x 18 ET 52 (9)
Cast aluminium
wheel
painted
245/40 R 18 *

Wheels and SST tyres (self supporting tires)