Autotechnik + Tuning or also known as ATT has released its tuning package for the BMW M3 convertible known as Thunderstorm M3.ATT increases the output of the stock 4.8-liter V8 engine from 420 hp to 500 hp. The improvement is made possible thanks to the inbuilt compressor, optimized engine software, unique exhaust system with optimized dynamic pressure and 4×90 exhaust pipes (€1,355).
The price for the engine upgrade including installation is €11,749. The suspension system has also been upgraded with KW Variant 3 coilover suspension system at €2,029.
The ATT Thunderstorm BMW M3 Convertible stands on ATT-TEC LeMans 8.5×20” wheels wrapped with Michelin Pilot
Sport 245/30 ZR 20 tires at the front and 10×20” wheels wrapped with 285/25 ZR 20 tires at the rear. The wheel set is priced at €3,475 including mounting and balancing. To complete the wheel set, ATT equipped the BMW M3 with 20 mm distance washers on the front and rear axle for €393.
Customers have the option to wrap the interior cabin with either carbon parts or Swarovski crystals.
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