Launching is an art - their is more to it then how wide your tyres are or what brand of rubber they are.
Track prep, track temperature, clutch type, tyre compound, tyre pressure, horsepower, rpm etc all influence your launch.
On a side note I have a pair of unused 300ZX rims with very very warn Nitto NT555R rubber (255's) sitting in my garage if someone wants to throw some mulla my way