I would have thought caliper might be a problem lining up

 

Fitting a smaller disc that's 4.5mm smaller in radius means you might end up with a bit of the pad sticking over the edge of the disc - which isn't ideal for braking performance or for the pad itself as it gets worn down.

 

Argh so can't be done. Back to custom discs then!

 

ben what exactly are you trying to do i rememeber a while back you asking about doing the m135 brake upgrade you still trying to do this?

i take it your a bit like me you like to do suttle mods that makes the car look OEM? ie trying to put the BMW big brake kit on instead of an after market kit?

well as a suggestion why dont you by an alternative second hand after market big brake kit that will fit and that discs and pads are easy to come by and send the calipers to the brake caliper specialist's who will make them look BMW oem instead? this would work out cheaper and give you the look your after?

 

It's only the rears I'm struggling with, the fronts are on and I've just decided to revisit the rears as I know the size of the brakes I need now.

I'm basically trying to get the rear calipers and discs from the M135i fit my car. The problem I have is the height of the M135i discs is only 60mm and I need 74mm but can't find any discs that are 345mm diameter, 24mm thick and 75mm high.

I have been quoted over £500 for custom ones :/

 

It's only the rears I'm struggling with, the fronts are on and I've just decided to revisit the rears as I know the size of the brakes I need now.

I'm basically trying to get the rear calipers and discs from the M135i fit my car. The problem I have is the height of the M135i discs is only 60mm and I need 74mm but can't find any discs that are 345mm diameter, 24mm thick and 75mm high.

I have been quoted over £500 for custom ones :/

yeah i know custom discs are overly expensive this is why im thinking is it worth you finding an alternative brake upgrade kit for the rears that you dont have this hassle? bound to be plenty of others? i know this company who BMW themselves use to refurb/rebuild and repair their customers brakes the cost would not even be half of that price and they can make any caliper look exactly as you want? so they could replicate the paint and M badges no problem to give you the look your after?

 

Ooooo which company is that?

I can't have rear bigger than 2 pot and most performance kits are 4 pot rears which makes it hard....

 

Brake Caliper Rebuild, Painting, Repair and Refurbishment Specialists

first page funnily enough has a BMW style caliper straight off the mark

these guys are PROPERLY good hence why the likes of BMW go to them to do the work on their behalf, you should be able to see it under their reviews and customers

 

its another option for you fella and im wondering i bet this is possibly what the other BMW owners have been doing and keeping on the quiet, but this Lot cant be recommended higher if porsche ,Bmw and ferrari are happy to use them ...yeah they are good...very reasonable price as well

 

Could just do standard rear calipers with them I suppose...

 

exactly mate, if you have upgraded fronts they do like 70-80% of the braking anyway so this is what id do as well TBH keeps everything simple, and looking stunning all the same this way

 

I'll give them a bell and see what they have...

 

Try here also Ben, speak to Thomas he knows his stuff and could sort something out for you.

Main page - PorscheCalipers.co.uk