So a Duster 340 would have had E70-14's, so, that's a 25.7" tall tire. So right off the bat if your front tires are 25" tall you've lowered it just with the wheels in the front. In the back you've raised it slightly too. The other thing is that the factory measurements are with a "5 passenger load", so, if you measured your car empty it's too high, especially in the back. If you put 3 people in the back seat the rear end is gonna get a lot lower, you have to figure that's at least 500 lbs in the back seat. Because of the location of the passenger compartment relative to the wheels the passenger load will lower the back a lot more than the front.
