cracked subframe

[Chad]

Redish are not taking any bookings as they are fully booked out till November:hahaha:

Personally I don't see how a couple of plates welded over already damaged/cracked subframe panel,can be better than a full new thicker floor panel, personally trust BMW technology over a couple of aftermarket plates welded in, But anything is better than subframe dropping off.:thumbs:

[JBird]

I agree. Reddish seem like a good bunch, but welding plates over the top is bit mickey mouse. If the BMW resin injection is done to a high standard it should give a softer load distrubution and be better in theory. There is a reason why it is 2-3x more expensive than the plate method (other than usual BMW rip off rates).

[estoril_csl]

I agree. Reddish seem like a good bunch, but welding plates over the top is bit mickey mouse. If the BMW resin injection is done to a high standard it should give a softer load distrubution and be better in theory. There is a reason why it is 2-3x more expensive than the plate method (other than usual BMW rip off rates).

The resin is done as well as the plates, or at least it was in my case, and across the entire floor. BMW only do the resin on the weak side unless you push them to do both.

[JBird]

BMW only do the resin on the weak side unless you push them to do both.

You got me worried for a second, but looks like they did both.

[select]

When i had mine done by a shop who specializes in this repair (pretty much like redish) they advised the following. They also have patented their plates so im guessing they know their stuff.

Mine had a small crack on the right hand side which "they all have" they welded the plates on and they advised to replace the subframe bushings with stiffer ones, because according to them, the rear axle transfers the force onto the subframe but the rubber bushings designed to damp the force is too soft which allows the subframe to flex which it wasn't built for and therefore starts to crack.

FYI that is the same that BMW did on the e92 M3 GTS, the used solid subframe bushings instead of rubber ones. And the M4 doesn't have subframe bushings at all, as far as i know.

[Gazza]

How do you check for these cracks/where to look ?

[select]

https://www.youtube.com/watch?v=HaTYBaMpUtE

[Chad]

https://www.youtube.com/watch?v=HaTYBaMpUtE

. I'd be embarrassed to call that my undercarriage, needs a bloody gud scrub ,mother would be ashamed.:gayfight:

[GregorFuk]

Personally I don't see how a couple of plates welded over already damaged/cracked subframe panel,can be better than a full new thicker floor panel, personally trust BMW technology over a couple of aftermarket plates welded in, But anything is better than subframe dropping off.:thumbs:

Redish drill stop any cracks, weld them up and then install their strengthing plates. Once they have done that they inject the BMW resin. It's a proper job.

There is nothing 'new, improved or thicker' about the panel BMW weld in when they do a full repair. It's the exact same pressing. There is a thread on here that has pictures which shows no difference.

[Jon8710]

How about bore scoring and IMS bearing failure in the Porsche M96 engine, Big end bearings wearing out in short order and throttle actuator failures in the V8 M3 engines, EGR issues on Range Rover diesels. These are just off the top of my head, I'm sure there are countless others. All affecting cars under 10 years old, all potentially very expensive, not covered by the manufacturer.

MC

I've got a 996 C4S and a CSL so im proper F**ked !!!!

[Gazza]

How do you check for these cracks/where to look ?

Thanks for the video, hopefully mine is ok as it had a check-up at Elms just before I bought it.

[MisterCorn]

I've got a 996 C4S and a CSL so im proper F**ked !!!!

I have a 996 C2, CSL and a Range Rover, I like living on the edge :bigcry:

MC

[Monkey]

Thanks for the video, hopefully mine is ok as it had a check-up at Elms just before I bought it.

If you're ever down Brighton way just pop into see me and I'll check it free or charge for you:thumbs:

[Gazza]

If you're ever down Brighton way just pop into see me and I'll check it free or charge for you:thumbs:

Thanks for that :thumbs:

[nigt3]

It amazing me that some people think the BMW repair is a better option than welding in plates and stop drilling the cracks. BMW put the same Sh1te back in that broke in the 1st place, and as what's happening in the op's case in should just about last 10years so they don't really give a sh1t after that!! Also some of the people who work at BMW main dealers I would'nt let work on my kids push bike never mind a csl.
OP take it to Redish or there's others who can fix it properly (there's more options than just plates)