Hello, I'm new & interested in purchasing a 1999 DeVille. I'venoticed thevisual differences between the D'Elegance & Concours models. I'm also aware of the 25HP difference. Whatexactly are themechanical differences between the two models? Thanks for your help! [sm=dontgetit.gif]

 

I noticed that as a standard feature, the 97-99 DeVille Concours has a Responsive Suspension listed. What is it?

 

The differences I am aware of are as follows:

ConcoursD'elegance
295 lb ft @ 4400 rpm300lb ft @ 4000 rpm
300 hp @ 6000 rpm275 hp @ 5600 rpm
axle ratio 3.71:1axle ratio 3.11:1
0-60 7.5 seconds0-60 7.8 seconds
Speed limited to 130mph speed limited to 112 mph
Brushed cast aluminum 16x7 wheelsChromed cast aluminum 16x7 wheels
P225/60R16 H speed rated tiresP225/60R16 S speed rated tiires
Road sensing suspensionNA
StabiliTrak optional
Magnasteer IIIMagnasteer
Towing package 3000 lbs.Optional
Weight 4063 lbs.Weight 4012 lbs.
Analog clusterDigital Cluster
Fog lamps NA
NA Classic Cadillac Wreath Hood Ornament
NA Classic Cadillac Gold Trim Package
Floor shift transmission Column transmission shifter
Seating for 5Seating for 6

The suspension system you inquired about is a computer controlled system that adjusts for different road surfaces.

 

Does the suspension on the 97-99 Concours automatically lower when traveling at ahigh speed, similar to that on the Lincoln Mark VIII?

 

Just curious as to why the car with more hp and a higher speed limiter would come with a lower rated speed tire?

 

H are rated at 130 mph which is higher thanS at 112 mph, its just one of those things that makes no sense. The speed is limited to the tires, both cars could easily hit150 mph with V rated tires.

The suspension does lower and lift according to conditions, the big Cadillac runs low and stable at high speed.