Has anyone ever had a wishbone bolt shear in the subframe and found a solution?

I have tried welding nuts on the exposed bolt but even these just sheared the bolt lower. I am guessing the ordinal wishbone bolt was cross-threaded or over-tightened or just steel versus aluminium...

My head tells me that drilling and tapping under the car will be less than ideal - but has anyone done this? Is this achievable?

Since ripping out the whole subframe to get the bolt machined out seems drastic and am worried that more bolts are going to give me worse nightmares

2005 Octavia. Mad that I am considering scraping car over this....

OK I have managed to successfully complete this job without removing subframe.

Here are my tips.

Grind head flat. Punch in centre

Use colbalt drills.

Start with 4mm go up to 8.5mm in 1mm increments. Use a lot of cutting oil.

x1 colbalt fluted HSS tap 10x1.5.

Tap 1/4 turns, rotate back. Clean and add cutting oil frequently. Be prepared to tap 1hr per hole. Buy genuine bolts.

Good luck if you ever need this advice.

Edited 14 August, 202514 Aug by Davidmb
Spelling