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Trailing arm differences - Drum vs Disc brakes

Posted: Tue Feb 24, 2026 3:54 pm
by Plodder
I have discs on the front and rear of my 91 416 .

Just wondering what the difference , if any, between the trailing arm for an R8 model with disc brakes and those with drum brakes?

Appreciate that the stub axle and fittings will be different but are all the necessary holes and brackets on a trailing arm for a disc brake if I brought one which was for or had a drum brake fitted .

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sat Mar 07, 2026 8:48 am
by James3990
Yes trailing arms are identical.

I cover this in my project thread - https://rover200.org.uk/forums/topic?t=14243&start=120

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sat Mar 07, 2026 8:55 pm
by 961tat
As James says they are the same just change the stub axle and handbrake cable :)

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sat Mar 07, 2026 10:39 pm
by Plodder
Thanks for the helpful information. At some point I’m thinking about rebuilding the trailing arm and hub and it would be nice to rebuild them off the car and just swap them out complete. Lots of other jobs in front , but the trailing arm bushes are 16 years old so probably due to be renewed soon.

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sun Mar 08, 2026 7:25 am
by 961tat
Plodder wrote: Sat Mar 07, 2026 10:39 pm Thanks for the helpful information. At some point I’m thinking about rebuilding the trailing arm and hub and it would be nice to rebuild them off the car and just swap them out complete. Lots of other jobs in front , but the trailing arm bushes are 16 years old so probably due to be renewed soon.
I have powder coated ones with bushes in and stub axles both types the biggest issue is the back plates NLA and usually turning to dust , so when looking for secondhand ones to rebuild the back plates are more important in my opinion .

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sun Mar 08, 2026 2:37 pm
by Plodder
961tat wrote: Sun Mar 08, 2026 7:25 am I have powered ones with bushes in and stub axles both types the biggest issue is the back plates NLA and usually turning to dust , so when looking for secondhand ones to rebuild the back plates are more important in my opinion .
Do you rebush them with standard rubber bushes or with poly bushes?

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sun Mar 08, 2026 10:01 pm
by 961tat
Plodder wrote: Sun Mar 08, 2026 2:37 pm
961tat wrote: Sun Mar 08, 2026 7:25 am I have powered ones with bushes in and stub axles both types the biggest issue is the back plates NLA and usually turning to dust , so when looking for secondhand ones to rebuild the back plates are more important in my opinion .
Do you rebush them with standard rubber bushes or with poly bushes?
Woops that should have said powder coated doh :slapme

Standard rubber for the road, rubber absorbs shock and vibration , on uk road needed poly good for track cars and getting rid of tooth filling on the road gumpy old get i am :tt2

Re: Trailing arm differences - Drum vs Disc brakes

Posted: Sun Mar 08, 2026 11:25 pm
by Plodder
I’m with you on a softer ride but that’ll start a good discussion :laughing2