other than being able to open doors better what are the difference between the two and what are the pros and cons of each, any cost difference..thanks for the facts which will help me decide which I need. I will use to lift corvette, 1/2 ton chevy ext cab truck and several toyota cars.
there are generally three layouts.
Symetrical has both columns facing each other and all four arms are of equal length. The vehicle center of gravity is dead center on the lift.
Then there is Semi Asymetrical where the columns are still facing each other but the front arms are shorter than the rear arms. This allows the vehicle to slightly set back for more door clearance.
Finally there is full asymetrical which has rotated columns with short and long arms.
Also on asymetrical models the arms usually rest by folding together and pointing toward the rear of the lift where symetrical lifts have the front arms folded forward and pointing toward the front and the rear arms folded and pointing toward the rear.
I have seen the Corvette pose a headache for setting the right front arm on a symetrical lift as the exhaust pipe angles toward the door and bends back under before it enters into the converter.