Z4-forum.com

As mentioned in another thread, overhauled the brakes, discs and pads and fluid change, got to the last bleed nipple, it's that's corroded in. Won't budge, probably will break off. Need to bleed the new fluid through to that caliper and remove some air. Tried bleeding from the hose connector but that hasn't worked.

Looks like I may end needing pair of new front calipers, any recommendations? Car is Dec 2006 3.0si

Take caliper off and get it refurbed buddy they can get the nipple out
Sadly stupid design alloy v steel = corrosion
Some use light smear of copper grease when putting in and around top
Try bigger

Unless you're doing a refurb yourself, or is local, probs cheaper to buy new for £60 ish

How about the this? Look at this on eBay
https://rover.ebay.com/rover/0/0/0?mpre ... 3118740385