Fitting the new diffuser is simply the reverse process—pushing the tabs into place. No glue or screws are required.

The trunk spoiler was slightly more complicated. Start by removing the trim on the underside of the tailgate. Then unplug the factory spoiler’s motor before loosening the ten 10mm nuts that secure it.

Now take the new spoiler and apply glue to its underside, either side of a white plastic housing. This housing incorporates the resistor module to trick the car into thinking the OE spoiler is operational.

Glue an O-ring around that housing and place the spoiler into the tailgate. It’s then bolted into place with the original 10mm nuts and four additional ones (14 in total), with one of these hiding behind the control module.

FMS used painter’s tape to hold everything in place while the glue dried. The motor control plugs into the plastic housing to complete the job.

For our full step-by-step guide and online video, visit

Wheels & Tires

Once the body kit was installed, a set of 19x9” Audi Turbo Twist wheels were selected and fitted. Again, these were ordered from our local dealer. They’re available for the Mk2 Audi TT in either silver, white or black finishes.

We chose black because it contrasts our Sahara Silver paintwork and gives the car real presence on the freeway. However, be aware the center caps are a separate item to order.

FMS transferred TPMS tire pressure sensors into the new wheels. They can be taken from your original wheels or ordered separately from your Audi dealer. Having the sensors will prevent the tire deflation warning light appearing on the dash every time you start the car.

Obviously, the offset and bolt pattern was specifically designed for the TT, so no fitting or clearance problems should be encountered, provided you fit the recommended tire size.

In this instance it was 255/35 R19, and we again opted for the Continental ExtremeContact DW tread pattern because we’ve had such great results with them in the past. After extensive tire tests we’re confident they provide high levels of grip in both wet and dry conditions. They’ll also have plenty in reserve for when we add more power in an upcoming installment.

Next Month

We plan to fit adjustable sports suspension, anti-roll bars and possibly a big brake kit.

Supplier Part Price Contact
Audi front spoiler $556
Audi side skirts $689
Audi rear diffuser $424
Audi trunk spoiler (painted) $635.30
Audi 19x9" wheels $690 each
Audi 255/35 R19 Extreme Contact DW $POA

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