Cadillac XLR Forum Discussion, Performance difference- V or not V? in Past Cadillac Vehicle Discussion; All I know is that Both models have the V8. What are the main differences between the XLRV and XLR??...
Edmonds was a bit off...the v did not have the adaptive cruise control due to the revised front grill. ( something I would never trust anyway ) I know for 2006, the v added the 6 speed auto over the 5-speed.
From a performance standpoint, this is still a luxury roadster vs. a sports car. The best rear-end differential ratio would be 3.08 ( certain trap speed, trans ratio & rear wheel torque taken into account ), which could shave off over 1/2 sec on the quarter. Yet it still has the 2.56... which is fine if you want to roll along at 1500 rpm doing 75.
On the plus side, there is a rear stabilizer bar ( this can, and should be added to the base for a song ), and a pneumatically operated secondary exhaust bypass ( which allows you to install that aftermarket mild to wild switch vette owners often do)