Street cars are not necessarily set to a "performance" setting. More times then not, they are set for even tire wear. That is not normally a setting that takes advantage of the tires cornering capabilities.
If you want your car to "handle" like a race car,or performance car, those specs can be mutually exclusive. For that try something like -1 degree... and yes you will see the inside edge of the tire wearing noticeably faster.
Also, with a tire like you have, there is going to normally be A LOT of front steering jittering you will feel in the steering wheel. Some might call it bump steer?
Remember the front stock tire these things first came with? (185-70-15) That was to reduce customer complaints as much as anything. Street cars didn't corner like race cars in 1971.
Just going to a 235-50-15 on the front makes a entire new ball game here.
Caster setting is the most controversial number, second is the camber. In my opinion, NO CAR is going to handle for a crap with a 0 degree front camber. It provides for NO tire leaning in the turns at all and if you drive the car aggressively will wear the outside edge.
You just need to find the setting that works best for you, the way YOU drive the car, feels the best, and gives you the most reasonable wear. However, IN MY OPINION, if you get more then about 4,000 miles out of a set of tires with an "aggressive" tread pattern (aka as a "performance tire") you are more then what is expected. Doesn't matter who made them or what they cost, $100 or $1,000, they'll be done by 3,500 miles. Anything else you search for pilgrim is going to be the same as alchemy, and that only existed in fairy tales.
