Here is one for you to ponder.

My Tenere has three warped brake discs.

No sticking calipers.
No rubbing pads.
No heavy handed/footed riding.
No abuse other than normal road riding.

I took everything aprt and could not find a single fault.

The only thing that sticks out is that they all went wobbly within 2 weeks of each other. This was during the very wet few weeks we had in the UK. I was riding in heavy rain almost everyday.

I have ordered new discs as i can't handle doing the funky chicken every time i want to slow down.

Any ideas?