Talk Morgan Forums Morgan Sports Cars Morgan Aero 8, 2012< Plus 8, SuperSports, Coupe & Aeromax Brake Discs

Does anyone know where the brake discs were sourced from for a 2014 Aero Plus 8 ?

Dimensions:

OD 345
Centre dia 67
PCD about 11.5cm
Thickness 30mm

AP Callipers

Google AI came up with this:

The brake discs for your 2014 Morgan Aero Plus 8 were originally sourced from the Mercedes-Benz parts bin, specifically from their high-performance AMG and V8 models of the early-to-mid 2000s.Like many low-volume British sports car manufacturers, Morgan heavily relied on major automotive manufacturers for standard braking hardware to pass global homologation rules.

Donor Car Specifications
The exact dimensions you provided directly match the front setup used across multiple Mercedes-Benz platforms:
Outer Diameter (OD): 345mm
Centre Bore (Centre Dia): 67mm
Thickness: 30mm
PCD (Pitch Circle Diameter): 5x112mm (which explains your measurement of "about 11.5cm" across the bolt circle)

Sourced Mercedes-Benz Models
When looking for direct replacements outside of Morgan's official parts network, you can look up front brake discs for the following models:
Mercedes-Benz CLK 55 AMG (C209 / A209) — Years 2002 to 2006
Mercedes-Benz C32 AMG (W203) — Years 2001 to 2007
Mercedes-Benz SLK 55 AMG (R171) — Years 2004 to 2011
Mercedes-Benz CLK 500 / C350 — High-specification V8 sport-pack models

Original Equipment (OE) Part Numbers
To ensure a precise fit, you can source aftermarket alternatives (such as Brembo, Bosch, or EBC) using the official Mercedes cross-reference numbers:
Mercedes OE Part Number: A2034210912 or 2034210912
Bosch Part Number: 0986479651


That's a good place to start i guess?

I am not certain the AI is A'ing right? Always happy to be proven as wrong.

I have a picture here of the Aero S2 (2005) which I remember being APRacing.
I found a good photo of the Coupe which was 2013 made using the same frame and (I believe) main parts as the Aero +8. These also appear to be APRacing which is as I remember them.

I know I have replaced the discs and pads on several AMG's (they do get some workout) E63, CL, ML63 etc. They were all Brembo with AMG naming on the caliper.

This is the parts code and list for the S212-E63 (red herring for the Aero+8 I believe but for illustration if helpful) from Europarts.

Qty Part No Description Vehicle Reg Price
2 10422837A Brembo Brake Disc MERCEDES-BENZ E Class b17evl £645.98
2 10422208A Brembo Brake Disc (Rear) MERCEDES-BENZ E Class b17evl £268.58
1 10122301A Brembo Brake Pad (Rear) MERCEDES-BENZ E Class b17evl £60.34
1 93022077Y EBC Yellow Stuff High Performance Brake Pad Set MERCEDES-BENZ E Class b17evl £274.99

One thing it might be worth trying would be a call to EBC in Brum direction. I have always found them very open and easy to deal with as well as making great parts. They have a great deal of knowledge as a real specialist. Same with AP Racing, brilliant bunch.

S2
Coupe
AMG S212 E63 rear (sorry it went odd)

Thanks guys. I also tried AI and got a slightly different answer:

"The Morgan Motor Company sourced the front brake discs for the Aero 8 Series 3 directly from AP Racing.The technical breakdown of the front brakes for this specific generation includes:OEM Supplier: AP Racing (based in Coventry, UK).Morgan Part Numbers: MBS00156 (Front Right) and MBS00157 (Front Left).AP Racing Cross-Reference Part: CP7077-108P.Specifications: 348mm diameter x 32mm thickness, cast iron ventilated discs, paired with 6-piston AP Racing aluminium callipers."

Interestingly I tried to get prices from two different Morgan agents for these part numbers. One quoted £300 per disc and the other £750 (!)

I cannot for the earth of me think why Morgan would not use an off-the-shelf disc so I'm going to keep looking... will let you know how I get on.

Am using the following updated dimensions:

348 Dia
70mm centre hole
32mm thickness
42mm offset

Mulfab have offered to make up a set too (they make S1 and S2 but not S3 discs) so I'm going to take them an old disc tomorrow to check measurements and get a price.