Last service (18,000mile) reported uneven wear on the rear brake pads..
Inboard pads 20%worn... outboard pads 80% worn! Also severe corrosion on the discs.

The fronts seem fine only 30% worn.

Reason seems to be that due to low mileage and low braking force on the rear has allowed corrosion to eat into the discs and wear the pads on the rear more than the fronts.
Solution seems to be to replace the rear discs and pads at cost of £254. given that the low age and mileage its likely I will be repeating the process every couple of years.
It seems to me that it may be more cost effective to replace just the pads and accept that they may wear more quickly. Braking force doesn't seem to be affected noticeably. I could probably get several sets of pads for £254.

Anyone got any suggestions on the best resolution to the problem?

If I do replace the discs what can I do (other than drive it more) to stop them corroding as badly as the first set?

 

It may help if possible when parked up not to apply the hand brake, but leave it in gear, ie if in a garage overnight, I do this it also stops the pads sticking to the discs when hot, also after washing the car give it a quick up/down the road to dry the discs off.?

 

i got a full set of brakes + calliper for £300 from BI. £250 is a quote from honda?

not sure on the corrosion aspect...being unprotected metal it's going to rust! maybe the only way around it (for good) is carbon discs. garaging would probably help as it'll keep the worst of the elements away.

 

To clarify veehexx post, BI is www.brakes-international.co.uk where you can get some rear discs for £70 delivered. Fitting is straightforward - no need to use Honda, but don't let them charge you for more than an hour's labour if you do.

As for avoiding corrosion, try not to leave it parked with wet discs, and if you do, go out the next dry day and give it some hard braking. do that once a week and you should be fine.

 

Using the car more is the solution, even if its for very short distances to keep the surface of the discs clear of rust.

Unfortunately, once the discs start to corrode the rusty surface is harder than the pad and very abrasive. They will eat any new pads you put on the car.

You need to replace or have those discs skimmed, but once you've replace them you could fit harder pads. Harder pads will be more able to scour off the rust and keep the discs clear if you're unable to drive the car more.

 

Mine was the same, due to limited use, the bad disc surface eats the pads REALLY quick, and braking is compromised, you just dont realise it is until its been changed.

I went for pagid discs and ferodo ds2500 pads, its great now.

 

+1
marked improvement with new brakes and im still early in the bedding in process.
rust is a killer for pads, although do improve brakes that first application if it has reasonable surface rust

 

Hello FistralG
One important thing to remember is the S has Floating calipers, so ensure the full caliper moves freely, peel back the rubber gaiters and fill with a light, rubber friendly grease(CV BOOT GREASE), ensuring you let out any air, so the caliper moves freely.
If the floating mechanism on the caliper does sieze, or stiffen, it results in very uneven break wear.

 

There is a specific silicone grease for brake sliders.
Ask at the local motor factors for a packet...

 

It will need to be very high temperature resistant - i've had to sort this out on all of my calipers now - the old stuff had literally turned to putty.