[Frank Catt]

There is a lot more to consider when mocking up brake positions into the wheels than just size. If your car has a steering rack in front of the axle line ( like the GTD ) then the position of the steering knuckle is very important to get the steering geometry anywhere near right, particularly the Ackermann. On a GTD it is necessary to move the position of the knuckle outwards towards the wheels by some 40mm to get even parallel steering, this in turn means the brake rotor moves outwards and this in turn leaves very little room inside the wheel for the caliper. The whole set up must be looked at as a complete unit, and thats when it gets a bit more complicated. I run PS ENGINGINEERING wheels with AP 300mm rotors and CP5000 calipers, and there aint much room left inside the wheels, it gets down to feeler guage clearances. Frank