RudyP

Hydroplaning is a function of tread design/wear, speed and inflation pressure. Wet mode is merely a different throttle map and a little bit more aggressive stability control programming for power induced oversteer in wet conditions. Would not make a difference in a steady state hydroplaning situation assuming the OP didn’t mash the throttle when he started losing control (which is pretty clear he didnt)

Edit: water depth and surface grooving can also affect hydroplaning speed but now we’re getting technical… (for us pilots we have very different wet landing or RTO performance numbers depending on runway grooving vs. not)

Oh, and for English people it’s aquaplaning…

Drstimpy2!

For the record, I think most of us who want to know more details simply want to learn as much as we can to try and keep this from happening to us. Not throwing shade at anyone’s skills. I feel for you friend and I’m glad you’re ok and no one else was involved.

Alex911_992

Hi and thanks for your kind words,

The accident happened in the highway, empty road, in a straight line. I was heading up to the bridge and started raining aggressively and thats where i felt the car kick, like someone had lifted the car up. It was gliding for 300-400 m. I kept the wheel pretty much straight, didnt brake at all, did a 360 once and as the road was starting to curve i hit the concrete block divider. Speed limit is 75 mph.

Alan Smithee

Among other things, Wet mode actually changes aero with the front grill shutters and rear wing. Like you said it also adjusts the AWD power delivery forward to reduce power induced oversteer, but also the rear diff to reduce trailing throttle oversteer (the damage here clearly a result of oversteer).

Not saying Wet mode would have prevented this accident, as ultimately you cannot defy physics…but it was designed for exactly this situation and might have helped.

Snufkin

@RudyP "Oh, and for English people it’s aquaplaning…"

What about for Scottish people.....? 😉

tmslc

<< n/m >>

Eugene Soldak

I'm so sorry to hear about it. The main thing is that you are alive. Really. That's a rough situation, especially so soon after getting it. Fingers crossed car repair shops can fix problems up, and you'll be back on the road soon. Don't hesitate to reach out for support during this tough time.

Alex911_992

Thank you for your kind words. Its really tough but life goes on.

Fishah

Gutted for the OP. ****ty situation.

It's a type of scenario that's very hard to train for, and anything other than a perfect instinctual reaction will leave anyone in a wall. It's easy for the rest of us to think we'd have done better, but who knows really.

I think the morale of the story for all of us it to slow down in the rain, and be cognizent of our tire tread depth.

Furthermore to the OP, you might consider attending a class at Porsche Experience Center where I believe they have a wet kick-plate that simulates a hydro-plane scenario and would give you a chance to practice reacting to this type of scenario in the future.

992 911 GTS

This is pretty simple. These cars come with summer tires that are ****ing terrible in the rain and around 42 Fahrenheit and under. If you drive it like a sports car in that kind of weather you’re going to need to know how to manage low traction in the car.

kim9701

Glad OP is OK, but hydroplaning for 300-400M must've been terrifying.

Ikone

This sounds exactly what happened to me once, so I can vouch for it being hydroplaning. Except I was in a WRX and it didn't lift off for more than 50 yards or so. 300-400 meters is a lot. Almost half a kilometer. Are you sure?
Either way, it doesn't take much once you've lifted you just hold your breath and basically pray. I will say that some of the comments on tire wear may be warranted. If your car is on original tires at 15K miles (it's miles not kilometers, right?), then that's quite a bit and I'm sure the tires are worn.

Nevertheless, glad you're safe and hopefully you'll work it out with the insurance company to repair the car and get you diminished value difference.

rwbern

Everyone’s worst nightmare. Glad you’re safe & hope the insurance holds up. If totaled, just get back in the saddle & move on down the road. As described, not sure any PEC time would have helped, but time well spent for any 911 jockey.

Annona

A 360 too?? Wow, that must've been so scary.
Good luck with the next steps.
Take care,

Alex911_992

The first arrow is the start of the bridge and I'm pretty sure i lost control of the car even further than that. I hit the concrete divider right when the road started to curve.(left arrow)