How does turning off TC keep your car from killing you in the rain? just out of curiosity. In my experience, TC has been very helpful, as it means I don't have to worry about feathering the gas pedal in heavy rain.
Some implementations of TC/ESC will abruptly brake one or more of the wheels in on/off pulses, using the ABS pump, disrupting an otherwise balanced cornering car.
Yes. I won't buy a car I cannot disable ABS on, because it extends braking distances, plus by doing so, all traction control is off.
But I honed my non-ABS driving in my teenage years, pre-ABS (for most cars at the time), on rural dirt roads, and on roads with constant snow and ice, and driving on frozen lakes.
Of course, if you disable ABS, you may end up without any form of real differential, as many cars use ediff tech, which is horrible, so I now have to also vet for a true hardware, non-open diff.
ABS has nothing to do with improving braking distance. Any skilled driver, who knows their car, can do far better.
For skilled drivers, ABS extends braking distance.
What ABS does, is let a driver mash the pedal on full, and still steer around obstacles. Something a skilled driver can still do.
One problem with these tests, is that if you disable ABS on some cars, the proportioning valve is still set to 50/50, front/rear, meaning you start to lose traction on the rear wheels, and skid. This causes a loss of control, and reduced braking power.
Cars prior to ABS has the capability to adjust rear brake pressure by weight, a typical default of 70/30.
Some card have ABS controllers which you can disable ABS functionality, but still retain proportioning control. Cars with proper diffs are often like this.
Is this true with a modern abs, and have you tested your own capabilities vs abs? It can act on individual wheels which no human can do with a regular brake pedal.
I know of ABS capabilities, and extensively tested ABS on/off on every car I own.
ABS is about steering when people slam the brake pedal down, it is not about improving braking distance.
Outside of how it doesn't help on pavement, it is a absolute disaster on gravel, and deep snow.
For example, on gravel if you lock up the brakes, you dig in. Gravel builds in front of the tire, and your tire sinks. ABS won't allow this, and so on gravel I can stop from high speed fast, while ABS actively works to deny my ability to stop.
On snow, if you briefly lock up the brakes, snow builds in front of the wheel. You can then spin the wheels to turn, let up, and the car will instantly take off in a new direction. ABS actively prevents this.
ABS was never, ever designed to reduce braking distance. It was designed to allow people to steer while braking.
What kind of cars do you people drive where "feathering the gas pedal in heavy rain" is a necessity? My 90HP FWD car with very little weight on the front can still accelerate faster in rain without wheelspin than I'd ever need when driving normally.
My car is front-biased AWD and is very predictable in the heavy rains we have here during winter that can leave an inch or more of standing water on the roads. Plus I grew up driving older cars that didn't even have ABS, let alone TCS. That means my habit is inducing oversteer to save myself, against the tendency of TCS to induce understeer that most drivers feel more comfortable with. I'd much rather spin out than slide off the road. When TCS activates in the rain that can be dangerous, because I hit the brakes to dip the nose before steering in, only for TCS to detect I'm slipping and jerk the car in the opposite direction (IE, towards the thing I'm avoiding). After having that happen two or three times it became habit to turn off TCS, and I haven't had a scare like that since.
Fwiw, I don't think that's a fundamental issue with the technology or anything... it could be the implementation in your car is just kind of bad.
The traction control in my car is more than happy to let me toss the car around any which way as long as I'm not giving it some sort of input that I want it to be doing something else. It seems to respond not to "the car is doing something potentially bad" but "there's a mismatch between what the driver is commanding and what the car is doing".
Steer into a spin and I can keep the car spinning, steer a bit against it and I can skid it sideways, little-left-little-brake-no-brake-snap-right and I'm tossing the car around 180 degrees. The only point it will cut in is if, during one of these, I point the wheel some direction and hit the gas indicating I want to be going that way now--it will correct the skid/slid/spin and get the car going that direction.
I have a display up during the winter that shows TCS activation and individual wheel slippage so I know when I'm driving beyond the limits of my actual traction. In 6 or 7 years of driving it in Canadian winters really the only time I ever see it cutting in is getting the car moving from stopped on ice.
Try getting off train/tram tracks in snow and ice with traction control off. In many situations you absolutely need to let the wheels slip (but not too much) in order to get around instead of cutting off most of the traction.