I'm not sure why people can't fit a 17 on the front with "SRT" brakes...

The SRT-6 uses the same exact floating caliper and 330mm rotor as the SLK32 AMG which came with 17" wheels all-around from the factory.

In fact, I'm positive that you can fit 17" wheels on the front, as long as it's a Mercedes-spec wheel with proper offsets. Hell for that matter, the C32 AMG has 17" wheels if I'm not mistaken, and it has huge brakes.