Cadillac XLR Forum Discussion, What's the break down of my XLR's skin? in Past Cadillac Vehicle Discussion; What is the hood and trunk made of. Seems like the front fender is a plastic or composite. Are there ...
Its made in the same factory as the Corvette, so its basically made of fiberglass (a thicker grade than the 'vette).
"Like the Corvette, the XLR will be sheathed in composite bodywork, although the fiberglass is now thicker (3.0 millimeters, up from 2.25). New induction-heated molds, robotic parts handling, and laying the painted parts flat for curing should endow the XLR with a mirror-smooth finish." http://www.caranddriver.com/article....rticle_id=2481
The transverse leaf springs are made of carbon fiber. The front and rear quarter panels are made of RRIM (Reinforced Reaction Injection Molded) plastic, The door panels hood, folding top sections, sill plate, floor, rear decklid and trunk compartment lining are made of flexible SMC (Sheet Molded Compound). The front and rear fascias are made of TPO (Therma Plastic Oletin).
The hydro-formed frame is made of two-sided galvanized steel, the front and rear bumpers are ultra high-strength steel and the uprights for (and including) the windshield header are aluminum.