Greater use of structural adhesive and aluminum reportedly helps Cadillac reduce the overall weight of new models like the ATS and CTS sedans, which helps contribute to a "better ride and handling" and reduced cabin noise in both vehicles.
The new CTS uses 387 feet of structural adhesive, which is longer than a football field, as a bonding agent that holds together and "stiffens" load-bearing parts and components according to a GM press release.
The extensive use of adhesive provides a "damping effect," which reduces the transmission of vibration through the body structure. This means that drivers and other occupants of the new ATS and CTS will have to deal with fewer unpleasant noises.
To further improve the two vehicle's performance, aluminum was used "extensively" to preserve weight.
For the first time, all four doors will be constructed of aluminum, which cut 55 pounds compared with the steel doors on the previous CTS model. The base curb weight is approximately 3,600 lbs., meaning the CTS is the lightest vehicle in its class according to GM. The new model is approximately 200 pounds lighter than a comparable to the BMW 528i, which is similar to the new CTS.
Other aluminum contributions to weight savings:
-13.1 pounds by replacing steel bumpers on the current generation CTS.
-14 pounds by making front strut towers of cast aluminum compared with steel used in current CTS.
-7.2 pounds from the instrument panel structure
-36.5 pounds by using extruded and cast aluminum vs. a steel powertrain cradle on the current model.
"Reducing overall weight is a key element in producing a car that delivers agile handling dynamics," said John Plonka, CTS program engineering manager. "By rethinking very traditional elements, such as such as materials used for bumpers and doors, we are able to save precious weight and stay true to delivering a vehicle that is fun to drive."
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