Which is faster?

The Porsche 993 Carrera RS is faster — 1.9s quicker on average across 5 shared tracks.

Specifications

Specifications	BMW Z4 3.0si E86 Z4 3.0si E86	Porsche 993 Carrera RS 993 Carrera RS
Model Years	2006-2008	1995
horsepower	261	331
torque (N_M)	315	355
weight (KG)	1,285	1,238
Power to Weight	0.2	0.27
Rank	#315	-
Tire	140 R050	60 P ZERO CORSA
engine Description	3.0L NA I6 (N52B30 )	3.8 L naturally aspirated flat-6 (M64)
drive Type	RWD	RWD
wheelbase (MM)	2500	2271
width (MM)	1780	1796
length (MM)	4090	4244
height (MM)	1300	1316
0 - 60 MPH	5.7 SECs	5 SECs
top Speed (KPH)	249	277
price MSRP	$ 42,700	$ 67,200
Current Value	$ 24,000	$ 350,000
OVERALL VS AVERAGE LAP TIMES	+7.19s	+8.35s