Someone local to me has an m5 with a cracked rear subframe. I have a 528i I’m about to haul off for scrap...thought I’d give him the rear subframe if it’s compatible.
I think some bolt holes need to be enlarged, but same beyond that
E85 fueled, Eaton m112 supercharged 4.5L M62TU, TTV racing flywheel, Spec stage 2+ clutch, 88c thermostat, eibach sway bars, wavetrac 3.15 lsd, m5 steering box, Quantum 340lph fuel pump, Dinan camber plates, some powerflex bushings, Supersprint headers, M5 cats, 2001 gas pedal upgrade and many other things done. all diy by me
RealOEM indicates the M5 has it's own subframe, but does say the I6 and V8 non-M subframes interchange...
I just spent a few minutes staring at pix of M5 vs 540i rear subframes and can't spot anything obvious, no additional gussets or anything. Maybe there's some areas where spot-welds are full-bead welded on the M5? Thats the only guess I have...
2003 M3CicM6 TiAg
2002 540iT Sport Vortech S/C 6MT LSD TiAg
2008 Audi A3 2.0T DSG (the daily beater)
2014 BMW X1 xDrive28i (wifemobile)
Former:
1985 MB Euro graymarket 300SL
1995.5 Audi S6 Avant (utility/winter billetturbobattlewagen)
The M5 and 540 rear subframes are the same except for the sticker, different p/n, and price.
I bought a complete M5 subframe with everything attached to it to get the LSD, axles, and driveshaft.
It was exactly the same as my 540 subframe.
That’s what I thought. Where the subframe bolts to the car is he same on all the E39’s, and all the stuff that bolts to the subframe is interchangeable, so they should be at the very least interchangeable, if not exactly the same. I just wanted to get some other opinions about it.
I think there is only one slight difference on the M5 subframe and that is the bolt size for one of the bolts on the swing arm. I believe I recall something about the non-M5 having 12mm bolts vs 14mm on the M5. I would need to look up more details on that, but I seem to recall that.
-Paul
2003 "M5" - Full M5 conversion, AMG C63S 6 piston front calipers, Porsche Panamera 4 piston rear calipers, GC Coilovers, Eibach ARBs, UUC Evo3/DSSR, Borla Exhaust w/Muffler Delete, BMW NBT with Carplay/Android Auto, Bi-Xenons, e38 Style 37 M-Pars, e60 Hubs 530i 6-speed swap build thread2005 Range Rover 4.6is (M62TU Powered) - 4.6is Engine Swap from X5, BMW NBT with Carplay/Android Auto
2006 Porsche Cayman S - Soul Performance Competition Headers and Exhaust, H&R Coilovers, 718 Boxster Spyder wheels, Rennline 35mm rear spacers
Are 528 and 540 subframes totally identical?
-Paul
2003 "M5" - Full M5 conversion, AMG C63S 6 piston front calipers, Porsche Panamera 4 piston rear calipers, GC Coilovers, Eibach ARBs, UUC Evo3/DSSR, Borla Exhaust w/Muffler Delete, BMW NBT with Carplay/Android Auto, Bi-Xenons, e38 Style 37 M-Pars, e60 Hubs 530i 6-speed swap build thread2005 Range Rover 4.6is (M62TU Powered) - 4.6is Engine Swap from X5, BMW NBT with Carplay/Android Auto
2006 Porsche Cayman S - Soul Performance Competition Headers and Exhaust, H&R Coilovers, 718 Boxster Spyder wheels, Rennline 35mm rear spacers
Bookmarks