Solid rear axle

135iTX

Corporal
Dec 1, 2017
115
68
0
Ride
2009 135i
Anyone do a solid rear axle conversion on a 135/335/535? Curious if it could be a low cost option if you can weld and do minor fab work for those running at the drag strip.
 

135iTX

Corporal
Dec 1, 2017
115
68
0
Ride
2009 135i
Tons of Cobras have been converted to SRA’s, it’s a common swap for those dedicated to drag racing
 
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Kenjermen

Sergeant
Nov 6, 2016
259
78
35
N las vegas NV
Doing a solid rear end will not be cost effective if done right. The amount of time and fab work it would take to do this would be insane and to the point you might as well back half the car. Now I would love to do this and there is a reason why peole are getting rid of there IRS for drag cause it just works. But it wouldn't be worth it for the everyday person. The hardest part would be getting the geometry correct and taking the time to fab stuff and ripping everything out to the point where it might as well be fully tubular rear end with a 4 link ;)
 

doublespaces

General of the Army
Oct 18, 2016
8,945
4,152
0
AZ
Ride
2009 E93 335i
Doing a solid rear end will not be cost effective if done right. The amount of time and fab work it would take to do this would be insane and to the point you might as well back half the car. Now I would love to do this and there is a reason why peole are getting rid of there IRS for drag cause it just works. But it wouldn't be worth it for the everyday person. The hardest part would be getting the geometry correct and taking the time to fab stuff and ripping everything out to the point where it might as well be fully tubular rear end with a 4 link ;)
So....Send it?
 
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