[PG325]

I've recently purchased some new BMW alloys, the original set were showing signs of corrosion, especially where the wheel mounts onto the brake disc.

Is there something I can use in between the faces to stop the reaction of metals?

[Craig-SM]

Whatever you coat them with is only a temporary fix as they work in very harsh conditions not just from the weather but also effects of braking too with heat, gases and debris that eats away at the coating.

[HighlandPete]

Originally Posted by PG325

I've recently purchased some new BMW alloys, the original set were showing signs of corrosion, especially where the wheel mounts onto the brake disc.

Is there something I can use in between the faces to stop the reaction of metals?

You shouldn't be using anything that acts as a lubricant on the clamping faces. (Neither disc hub face, or wheel mounting face). Any anti-seize grease / compound should only be used on the hub centre spigot.

[martin10chk]

Originally Posted by HighlandPete

You shouldn't be using anything that acts as a lubricant on the clamping faces. (Neither disc hub face, or wheel mounting face). Any anti-seize grease / compound should only be used on the hub centre spigot.

This - and its only really there that the corrosion is a problem in any case. Whenever I take the wheels of (switching summer to winter and back) I clean those areas off with a wire brush. They come off a lot easier and cleaner the next time. No grease required here.

[jenshb]

The only way you could do it is to physically isolate the metallic contact between the dissimilar metals. Check out "galvanic corrosion".

[PG325]

Originally Posted by HighlandPete

You shouldn't be using anything that acts as a lubricant on the clamping faces. (Neither disc hub face, or wheel mounting face). Any anti-seize grease / compound should only be used on the hub centre spigot.

It is the hub centre where the old wheels are corroded, this is where I was hoping there was something available to prevent it.

[Ennoch]

You could slather some marine grease in there, as long as you don't get it on the mounting faces. Clean off what corrosion there is and then apply. It's sticky stuff so lasts pretty well.