Okay, somebody has to ask, and I'm feeling cranky today...
WHAT THE HELL ARE YOU THINKING?????:huh:
The minimum stagger between front and rear should be 30mm (preferably wider in the rear). -poke-
As you increase that stagger you will dial in more understeer, which is useful on public highways to the inexperienced driver. Oversteer usually produces a series of poorly conceived reactions to correct the previous poorly conceived reactions.
As for the 55 aspect ratio, pourquoi?? Rubbing issues notwithstanding, you're seriously raising your ride height - even at 205/50 their is a 5mm increase in ride height over the stock front tire dimension IIRC. With a 55 aspect ratio it increases to 15mm! You're gonna look seriously ghetto.
So, a direct answer to your original query, yes, you are insane.
If you're trying to save money on tires, go with the Dunlop Star Specs, 205/50/16 front and 235/47/17 rear.
Crap. I really wanted a matched set of RE11s. They just don't make the right size for the front.:wallbang:
Sounds like I would have to go 235/40 on the rear (.35" taller than stock) and 205/45 on the front (.41" shorter than stock). And even then, hell if I know what the size differences would do the handling of the car.