Oh Ha Ha!
It's strange, you ask a serious question and get the piss taken.
It's no wonder people are getting more and more ignorant, with responses like the one above.
By the way unless the braking surface IS the tyre there will be no difference in braking performance* if you reversed the TYRES.
You "might"(UNDER CERTAIN CIRCUMSTANCES) get a difference in handling IF the tyres have a directional tread.
THUS ENDETH THE LESSON.
P.S. *Note that I did not mention stopping distance.
Nigel, Nigel, Nigel. Where do I start?
Perhaps at the beginning. I had played a role in making this thread go downhill, so I'll attempt to rectify it. Most of us were talking nonsense. Tyres don't regenerate if you reverse over old tracks, nor do brakes not work if you reverse the tyres. Nor does asymmetric whassisname exist. The latter notwithstanding, I will take credit when they do invent it.
I do suppose it was a bit of an insider joke shared by the old-timers here, spurred on by all the nonsense spoken in the past about the dire consequences of putting tyres the wrong way around. But then again, most people did see through it, I hope.
That's all.
BTW, stopping distance doesn't change when reversing tyres. I know you didn't say it did, but just in case.