Hydroplaning

[JJShort]

this was what I was thinking might be the case, since OP reported no loss of traction but a THUNK. so torque in either direction

I usually drive in one pedal mode, so this makes sense. Dare I try it with cruise control? (I'm sure I'll get more opportunities at that same spot and I will be careful..)

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[Henry Ford]

I usually drive in one pedal mode, so this makes sense. Dare I try it with cruise control? (I'm sure I'll get more opportunities at that same spot and I will be careful..)

Just slow down. If you are hydroplaning you have lost directional and braking control of your vehicle. I'm all for testing to learn the vehicle and improve your driving but a public road probably isn't the place. That said, you know what the situation is and I don't. As you said, be careful.

 

[Lightning64]

I’d agree that this truck seems more prone to hydroplaning compared to my previous ICE F-150 at highway speeds. I've had similar experiences on a brand-new expressway equipped with modern surface water management, including concrete tining (grooves).It was raining heavily but not excessively, yet the front end started letting loose multiple times—even though the rest of the traffic just kept blowing by me without any issues. Obviously I slowed down, but it was more that I would have anticipated based on the conditions.

Here is a summary of some articles on this.......

• Higher weight – EVs are heavier due to large battery packs, increasing water displacement under tires.
• Different weight distribution – More balanced or rear-heavy design may reduce front-end traction.
• Aerodynamics & underbody design – Flat underbody may alter water displacement at high speeds. "One possible factor in EVs being more prone to hydroplaning at high speeds is their flat underbody design. Unlike ICE vehicles, which have exposed mechanical components that create turbulence and help break up water flow, EVs have smooth underbodies that allow water to flow more uniformly underneath. This could potentially lead to less water dispersion, keeping more water near the tires for longer. Additionally, the aerodynamics of a flat underbody might create a slight suction effect, preventing water from being displaced as efficiently. While this isn’t the main cause of hydroplaning (weight, tires, and torque delivery are bigger factors), it could contribute at highway speeds in heavy rain."
• Regenerative braking – Can apply unexpected braking force, affecting traction on wet roads.
• Instant torque delivery – Sudden power can cause wheel slip in wet conditions.

 

[WRB]

After the deluge last week, I drove my 2023 Platinum, F-150 EV (14K mi on tires) to town and encountered some water on the road. Not fast (55 mph) nor deep (2 inches) water running across at an angle. Quite surprised to experience momentary hydroplaning with no loss of control, but a jolt when over.. Would have thunk that a heavy vehicle with AWD would plow through it better. Don't think my 2004 Tundra would have done the same.

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