When I got my fargo with 2" race kings I tried to cheat a set of wet railroad tracks, didn't happen and felt the rear end start to go. No crash but lesson learned. I have a fat bike with 4-inch but on the road the contact patch probably wouldn't help much more, I'm not even going to try it.
Doesn't matter how well your tire grips the road it will not grip wet polished steel.
Cheers,