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I had my first test drive today of a Model S Performance. It was raining, so perfect time to see how the traction control works. The scene: highway on-ramp, completely straight, no cars for several hundred feet ahead or behind me, nobody in the nearest two lanes of the highway (55mph limit). The road is wet, and there is a light rain falling - wipers are set to mid-intermittent. We clear the concrete barriers at about 30mph (still driving straight) and I (nearly) floor the accelerator. The car accelerates, starts to shudder from side to side (I would best describe it as a rocking motion). The (very cute) female Tesla rep is concerned. I let off the gas (at this point we are going approximately 50mph, and traffic going over 60 has caught up to us) as I apologize for not warning her about testing to to see how the TRAC does in the rain. We stabilize speed at 55mph, and I get off the nearest offramp and return to the showroom. She explains how the I'm a little concerned about the aggressive way that the car attempted to control itself in the rain - maybe my sense of the car isn't particularly well developed, but the (understandable) shuddering and "rocking" feels like the car is becoming more unsettled (I assume because the car is braking individual corners to control slip). I guess I'm primarily concerned since the car is something my (elderly) parents will be driving in the rain as well (and they have not driven a RWD car in more than 20 years), and I can conceive how this unsettling of the car might cause them to panic (as opposed to a more conservative power-cut type of traction control). I'd really be interested in hearing about other people's experience compares with the traction control in the rain and snow.
+1 to this. The Performance T/C allows more slip than the standard T/C. Combine that w/ enough torque to easily overwhelm the tires means that "unsettled" feeling. Drive a non-perf but I'm confident it will be fine for your folks.Are you/your parents getting a Model S Performance, or non-Performance? I ask because the Performance version has "Sport-Tuned Traction Control" which I read as allowing for a little more aggressive slip than the standard model. For them it sounds like the non-Performance version is the right way to go. Less torque and safer traction control.
+1 to this. The Performance T/C allows more slip than the standard T/C. Combine that w/ enough torque to easily overwhelm the tires means that "unsettled" feeling. Drive a non-perf but I'm confident it will be fine for your folks.
I think it is probably due to flooring the performance model with its 400+ lb-feet torque on a wet surface. You didn't spin out so the system worked. If your parents are not aggressive drivers then the performance version will drive like the standard versions as well.
haha, 'normal' driver.
My TC is kicking in very often. My reaction is usually push it a little harder and try and get it to stick
I second this notion, traction control is in place to keep tires from spinning when the driver is applying too much force. Noticing that the traction control is kicking in, and then *not* lifting is pretty much asking for the behavior you noticed. Under normal driving conditions with a normal driver, the instant they notice the TC they will lift, and the car will settle.
they could easily add a snow setting for tc.
they could easily add a snow setting for tc.
Uhhh, 80-90% of a Model S Performance is a TON of power to throw down in a reduced traction scenario. I would consider stomping on the accelerator of a car you don't know and effectively relying on TC and SC to keep you from crashing to be "reckless". Driving without exceeding the grip of the tires due to user input is a FUNDAMENTAL aspect of learning how to drive. TC and SC are fairly new technologies and people have been driving in rain and snow for decades. TC and SC are safety technologies to bail you out when YOU make an error. They are not to be relied on to drive the car for you. Comparing overzealous throttle application to holding a cell phone is quite spurious.This comes off to me as being the "Apple" response where so many problems are blamed on the user "not doing it right." While I readily admit that being reckless in a vehicle can and will cause the car to lose stability, driving in a straight line should be a relatively undramatic experience. My hope is that the car will not go from a "settled" to "unsettled" condition. I should have mentioned that the car did not go into TRAC only with the pedal fully depressed - most of the time was maybe 80-90%.