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It’s not such a straightforward equation any more. As the article explains, electric cars can play tricks with the weight distribution that ICE vehicles can’t,
by Our_Benefactors 4y ago
It’s not such a straightforward equation any more. As the article explains, electric cars can play tricks with the weight distribution that ICE vehicles can’t, and I would put a modern rwd with the latest traction assistance features above a FWD car from the early 2000s.
Snow tires makes more of a difference than being FWD or RWD in heavy conditions is the real truth here.
- PaulHoule 4y agoI have an 1/8 mile long driveway with a curve on a slope. I have sworn by an FF compact car with good snow tires (Used to be Hakka R's, but now Blizzak) Snow tires are essential. I went out one day on Dec 31 without snows and made it about 300 feet from my driveway before I went in the ditch and rolled my car. Circa 2008 I drove a FR Buick for a few weeks that had traction control and I was impressed with how it handled in the snow.
- Vvector 4y agoMy apologies, what does FF and FR stand for?
- bydo 4y agoFF is front engine, front wheel drive FR is front engine, rear wheel drive
- iamthefury 4y agoFront engine, Front drive vs Front Engine, Rear Drive The engine can be placed front (in front of the front axle), mid-engine (between the axles), or rear over/behind the rear axle. It affects weight distribution and therefore the vehicle’s handling.
- melenaboija 4y agoRWD are harder to drive on snow than AWD, that is a fact. Moving the weight helps on making them more similar to a front wheel drive (which traditionally were better than RWD on snow) but I don't think is even close to an AWD. And snow tires is what makes a difference, true, but you can mount them on any car and same thing for traction control. So a same age AWD with snow tires drives better than a RWD with snow tires, specially if you come from a stop on an upwards icy road.
- dsfyu404ed 4y agoSnow tires don't hold a candle to the doubling(!) of contact patch over which torque is transmitted that you get going from FWD/RWD to AWD and no amount of low effort quips about steering and braking will change the fact that, among people who drive like adults, the ability to get up hills, cross snow banks where cross streets meet plowed main roads and get up to speed for a merge without anything dumb happening are the dominant factor in the "can I safely drive today" equation.
- eitland 4y agoEither I am misreading you or or we disagree wildly. AWD is better than FWD or RWD, yes, but driving in the winter without snow tires. AWD matters exactly 0 when emergency braking and little as long as you aren't driving flat and not accelerating. Snow tyres help when accelerating, braking, driving straight forward and through curves, uphill and downhill. There is a reason why snow tires are mandatory here and AWD is not.
- vkou 4y ago> AWD matters exactly 0 when emergency braking Correct. All cars, whether they are FWD, RWD, or AWD are All-Wheel-Brake. The most important aspect of stopping safely are your tires.
- Syonyk 4y ago> Snow tires don't hold a candle to... Yeah. They do. I've driven pretty much every combination of FWD, RWD, 4WD, and AWD, with and without snow tires, in a variety of winter conditions. The "other tires" were regular all seasons, not high performance summer tires or anything. RWD with all seasons is really bad in snow, and mine generally didn't leave the parking lot in winter, because it simply couldn't. When you can start it, put it in reverse, let the clutch out, get out, and watch a wheel turning without the car having moved an inch, it's not a good day to take that car. FWD with all seasons is better, because there's typically more weight over the drive wheels, but they're not great in snow. 4WD/AWD with all seasons (I lump them together because while there are some differences, it doesn't matter in typical snow) is far better, and hysterically fun to drive (drift all the wide corners), but it's still somewhat tricky in snow. And, yes, you do get better braking with 4WD, because the front brakes slow the rear wheels too (most of the braking force is on the front wheels, especially at initial application). The catch is that when you lock the wheels, you lock all four and have zero guidance, vs just locking the front and at least continuing mostly straight (or, usually, whatever the local downhill is). FWD or RWD with snow tires is, by far, better than AWD with all seasons. And then AWD/4WD with snow tires is just a case of "What snow?"
- yellowapple 4y ago> Snow tires makes more of a difference than being FWD or RWD in heavy conditions is the real truth here. A FWD with snow tires or chains will almost certainly have better snow/ice handling than a RWD with snow tires or chains, by the simple virtue of the drive axle being steerable. If you've played Kerbal Space Program or a similar spaceflight simulator + rocket designer, then the reasoning here should be pretty intuitive: if you can only apply thrust to the reverse, and don't have reaction wheels, then in space you have no ability to steer under your own control. You need to be able to point thrust to the sides if you want to be able to turn (or stop turning). Same deal on an icy road. RWD means all your thrust is pointed backwards; FWD means you can point your thrust to the sides and control your car's orientation. Having both FWD and RWD (i.e. AWD or 4WD) is even better; sure, it constrains the overall thrust angles, but you also get more of it - which means better control when you're driving on a surface that ain't flat. This ain't just theoretical; it's something I've repeatedly observed every winter here in the Reno/Tahoe area.
- m463 4y ago> by the simple virtue of the drive axle being steerable. Is that a virtue? it makes steering tougher. The actual virtue is the weight of the motor over the front wheels (coefficient of friction * basically weight above tires)
- yellowapple 4y ago> Is that a virtue? it makes steering tougher. Not in my experience it doesn't. In icy or otherwise low-friction conditions, the steerable wheels being powered makes correcting for understeer and oversteer much easier than if they're unpowered - specifically because, per above, you can readily accelerate in directions other than forward/reverse, allowing you to orient the car even when sliding out. You can't rely on the tires' lateral friction to help you steer; a tire at an angle on ice will just slide with the rest of the car, and needs to be spinning to apply any force on said car other than forward. The catch, though, is that you have to be willing to accelerate at the very moment your brain would otherwise panic and tell your feet to hit the brakes. Hitting the brakes will make things considerably worse by stopping the spin on your tires (especially the fronts, which are the very tires for which spinning is absolutely essential for steering control). (In snow, this is a little bit less severe; the deeper the snow, the more pushback on the sides of the steering tires when at an angle, which helps a little bit with steering - but not nearly as much as on a dry road, thus still necessitating being able to accelerate with those tires) > The actual virtue is the weight of the motor over the front wheels (coefficient of friction * basically weight above tires) This also helps, but not nearly as much as the front wheels being able to accelerate in the direction they're pointed.