Hmm... I'm curious now. I'm gonna check it out.

EDIT: According to Infiniti, the wheelbase is identical, but wheel size drops from 20" on the FX45 to 18" on the FX35. Here's a snippet from the Spec page...with teh link below..

FX 45 / FX35 Specs

• Mechanical
Engine Type
FX45 4.5-liter 32-valve V8
FX35 3.5-liter 24-valve V6

Horsepower
FX45 315 hp @ 6,400 RPM
FX35 280 hp @ 6,200 RPM

Torque
FX45 329 lb-ft @ 4,000 RPM
FX35 270 lb-ft @ 4,800 RPM

• Drive type: All-Wheel Drive / Available rear-wheel drive (2WD) on FX35

Valvetrain
FX45: Double overhead cam (DOHC) 4 valves per cylinder with microfinished camshafts. Titanium intake and exhaust valves. Continuously Variable Valve Timing Control System.

FX35: Double overhead cam (DOHC) 4 valves per cylinder with microfinished camshafts. Continuously Variable Valve Timing Control System.
Intake System

Wheels
FX45 8-spoke 20" aluminum alloy wheels
FX35 7-spoke 18" aluminum alloy wheels

Tires
FX45 265/50R20 V-rated all-season performance tires
FX35 265/60R18 V-rated all-season performance tires
Spare Tire Temporary use, 175/90D18

•Exterior Dimensions (inches)
Wheelbase 112.2
Overall length 189.1
Overall width 75.8
Overall height 65.9 (with roof rails); 65.0 (without roof rails)
Track (front/rear) 62.7/64.6