Brake upgrade e32/e34 for e24
Posted: Wed Oct 30, 2019 2:02 pm
I'm in the process of putting e32 front rotor/caliper and e34 rear rotor/caliper and e32 M/C for an e24 I bought for my wife. Parts are getting hard to find. I've had to order from 3 different vendors so far to get all the pieces I need for this job. I've meticulously gone through a lot of brake upgrade threads here and on other boards and pretty sure I'm ready to tackle this job.
I'm using these as reference:
http://bigcoupe.com/phpBB2/viewtopic.php?t=2137&
https://www.bimmerforums.com/forum/show ... pgrade-oem
http://www.bmwe34.net/E34main/Upgrade/Data/mbrake.pdf
The problem I'm having is on the front rotors. I havn't ordered the fronts yet because everything I have read said front rotor size for e32 is 302mmx28mm with single 60mm piston. These have been hard for me to source, and I do not have a core so they are expensive as well. The only place I can find that has e32 front rotors for sale is ECS Tuning and for e32/e34 front rotors they list the size as 308x28mm. I can't determine if this is just a rounding error of some sort, or just measuring from different parts of the rotor (total size vs usable area perhaps???)
Am I stressing over nothing and I should just order what ECS Tuning is listing as 308mm? Or is ECS listing the wrong part? These are the rotors I'm looking at: https://www.ecstuning.com/b-brembo-part ... 6756090kt/
It isn't just the Brembo rotors they list at 308mm either, they have the ATE, Genuine BMW, Meyle. These are all blank rotors. No slots/drills etc. The "performance" rotors they list for e34 do not have sizes listed for them. I don't want to buy drilled/slotted rotors unless that is all that will fit.
Can anyone shed some light on this discrepancy?
I'm using these as reference:
http://bigcoupe.com/phpBB2/viewtopic.php?t=2137&
https://www.bimmerforums.com/forum/show ... pgrade-oem
http://www.bmwe34.net/E34main/Upgrade/Data/mbrake.pdf
The problem I'm having is on the front rotors. I havn't ordered the fronts yet because everything I have read said front rotor size for e32 is 302mmx28mm with single 60mm piston. These have been hard for me to source, and I do not have a core so they are expensive as well. The only place I can find that has e32 front rotors for sale is ECS Tuning and for e32/e34 front rotors they list the size as 308x28mm. I can't determine if this is just a rounding error of some sort, or just measuring from different parts of the rotor (total size vs usable area perhaps???)
Am I stressing over nothing and I should just order what ECS Tuning is listing as 308mm? Or is ECS listing the wrong part? These are the rotors I'm looking at: https://www.ecstuning.com/b-brembo-part ... 6756090kt/
It isn't just the Brembo rotors they list at 308mm either, they have the ATE, Genuine BMW, Meyle. These are all blank rotors. No slots/drills etc. The "performance" rotors they list for e34 do not have sizes listed for them. I don't want to buy drilled/slotted rotors unless that is all that will fit.
Can anyone shed some light on this discrepancy?