Quote: So SPD can help determine wheel size on A66 cars, but we don't yet know the date they changed from 15" to 14". I think the presence of the spacer between the lower control arm and the rubber bumper can also be used as a good indicator whether a car had 15" or 14" wheels.
10/20/69: Effective immediately, F70x14-inch RWL tires (T87) are standard with the 340 Performance Package. The E60x15-inch tires (U82) will be optional at extra cost. The Collapsible Spare (W34) and Rallye Wheels will no longer be required with the 340 Package. Effective immediately, Performance Axle Packages A31 and A36 are available with the 340 Package.
