You think theyre bad!
This is at 7 years old
Mine too John:
This is what Becky's looked like at roughly the same age. There's been other "stuff" to do to her (front struts etc) so she's still running around, 2 years later, on the same rear brakes. The leading shoes are getting pretty thin now though, this was them two years ago:
Both rear cylinders have been weeping fluid slightly for the last year and I've got new cylinders waiting to go on when I get the time, so I'll be doing a complete overhaul at that time including new shoes and drums.
If you look at the inner surface of the drum you'll see the friction surface is actually in quite good nick:
Although they are very rusty on the outside I would probably have left them alone for a while longer - with new linings fitted - except that the first time I removed them after I'd bought her I had the very devil of a job getting the drums off over the linings. Did all the usual "stuff" - like backing off the handbrake cables and walloping the drum with my leather hammer, levering whilst rotating the drum, etc, etc. Both sides fought me valiantly but once I'd got them off you could see why they had been so difficult - very substantial wear ridges on the inside edges of the drums. This is a common problem with drums which have been neglected and not removed at service time for inspection. A few minutes with a grinding wheel (and face mask) removed the lip and so the problem it caused. For that reason I would advise removing the drums and inspecting at every service. Jack mentions that sometimes it's possible to see the linings through a "window" in the backplate (I vaguely remember it being common on front drums - back in the days of Fred Flintstone - for there to be a hole in the drum which allowed this? Austin A55 perhaps?) This can be very handy for a quick check but I'd still want to take the drums off to properly inspect everything - and grind/file down any ridge that might be developing - at every service. It just makes life so much easier. The depth of Becky's ridges would indicate a serious amount of metal has been worn away so now, two years on, I'm going to be treating her to a couple of S4p's best drums!
Anyone who has followed posts I've done knows my views on rear disc brakes so, sorry tapiO, but I'll stick with the drums - unless you are going to increase the car's performance most substantially. Drums are a wee bit more labour intensive and renewing shoes can be "fiddly" but invariably much cheaper to sort out when major hydraulic bits go wrong and more than adequate for a standard vehicle (often gives a better hand brake performance too)
PS The picture of the drum was taken after all the hammering had knocked the flaky lumps of rust off!