Red Bull suspects McLaren and a few other teams of filling water into the tyres

[PapayaFan481]

It's the illegal mini DRS wing with a double penalty, without the top speed bonus with Spa wing they had to use Monza wing which cost them a lot of downforce in corners + without using Monza wing previously they only relied on FP3 and simulator to get the setup and balance right and as we saw they didn't get it right. Their overall gap in the race was exaggerated because of this.

If they experience overheating issues in Qatar and/or AD, we can discuss the potential influence of water-cooled tyres until Brasil. If they don't get into tyre issues and don't lose pace to others, water-cooling was definitely a nothingburger

Don't start that again.

Which race were they excluded from for the illegal wing again?

Did you miss the fact that they had to redo all their wings, thus declaring, in fact, that they were clearly illegal, and if they raced them again they would get possibly disqualified? Did that event go over your head somehow?

Once the tests were changed, then they became illegal, but up until that point they passed all the legality tests.

If they were illegal, then they would have been excluded. They don't let illegal cars keep their results.

Anyway. I have said my piece on this one, we clearly have different definitions of what illegal means.

[mwillems]

The impurities could come from the tyre itself if injected. But it's also.possible the rims were stained prior to the tyre being inserted into the rims.

That's true. I don't know how it works in F1, but when I get new tires put on my car, I observed that the dealer used a pasty lubricant on the bead of the tire before they slipped it over the wheel rim with the tire machine. Some of the residue was left behind on the sidewall of the tire where it meets the wheel rim. It's likely that there is more of "it" on the "inside" if that makes sense. Would Pirelli have confused themselves...anything's possible...

True, I would like to trust Pirelli in that it is a watermark, but if you approach this openly then you'd question all possibilities of its origins and not work from the basis it came from some nefarious addition of water by a specific party at a specific time and that it actually was water, since whichever liquid it was seems to.have long since evaporated.

Naturally the answer will be, we don't know.