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21 votes
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Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

tl;dr: Sadly, that tire appears to be a goner. The wheel is likely fine, though. You might be able to replace just the one tire. If you look at the divot cut out of the side of the tire, you'll see ...
Bob Cross's user avatar
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18 votes
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Why do pickups and large SUV's use 4x4 and generally not AWD?

I really think that it's more of a naming convention issue but there is a marked difference between 4x4 and AWD. In 4x4 all the wheels are "guaranteed" power. Power is sent from the engine to the ...
vini_i's user avatar
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12 votes
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4x4 for sports cars (street use)

My first thoughts, given the car is question, would be to check to see if there is a performance version of the car which features four wheel drive. For road use, if you have over 300bhp going ...
Steve Matthews's user avatar
11 votes

Why do pickups and large SUV's use 4x4 and generally not AWD?

One of the things the other answers neglected to mention and is probably the key point between AWD and 4x4 is that AWD transfer cases will almost always be a single speed differential. The 4x4 will ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
8 votes

Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

Based on your picture I would replace the tire without question. It's not worth the risk. If the sidewall fails while driving it could result in you losing control of the vehicle.
Move More Comments Link To Top's user avatar
7 votes

Replaced front brakes and "AWD temporarily disabled" light coming on

I very much doubt that using anti-seize would have caused this but your suspicion about the ABS sensor is likely right on target. It's possible you disconnected and neglected to reconnect the sensor ...
jwh20's user avatar
  • 12.1k
6 votes

Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

Replace the tire by all means. If you drive around with a tire damaged that badly, you risk having it explode while you're driving and losing total control of the vehicle, and possibly being stranded ...
anonymous2's user avatar
  • 5,225
6 votes

4x4 for sports cars (street use)

Before you start, I'd have a good read of the rules applying to it - I seem to remember that Germany is very strict on heavily modified cars, so you might well find there are restrictions on what you ...
Nick C's user avatar
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6 votes
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BMW X5 E53 - Bord computer / AWD issues

Please take the following text with a grain of salt as this is just an interpretation of a complex problem from a random dude on the Internet The steering angle sensor issue (DSC) is the most ...
Martin's user avatar
  • 8,448
6 votes

AWD Towing with Sling Type Truck

The reason you should tow an AWD either all 4 wheels on the ground, or all 4 wheels on a flatbed is because just having two on the ground means the differential is having to carry the, well, ...
Rory Alsop's user avatar
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5 votes
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2007 Escalade - grease on front axle

It looks as though the boot has split and is spewing grease all over the place. If there isn't a lot of dirt let into the boot, you should be able to just replace the boot (yes, this is a chore, but a ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
5 votes

Where is extra fuel consumption in RWD and AWD cars dissipated?

The short, easy answer: heat. That energy is being converted to heat in the driveline components for various reasons. It's important to note that these numbers are aggregates, however, and a really ...
Ehryk's user avatar
  • 2,704
4 votes

Why do pickups and large SUV's use 4x4 and generally not AWD?

4WD has the best traction in off road conditions, which is mainly what most larger vehicles are used for. As well as this, 4WD offers better fuel economy which is generally more favorable in a larger ...
James Finnigan's user avatar
4 votes

Should I get a wheel alignment?

Short answer. Yes. Your vehicle could be pulling to the right for several reasons. It could be uneven tire wear (which would likely have been caused by an alignment issue), tire pressure (which you've ...
Paul Dufresne's user avatar
4 votes

Does it save wear on AWD drivetrain to shift to Neutral before going into Park or Reverse?

Jerking and thumping when shifting through gears is an indication that you have bad either: bad engine mounts bad transmission mounts bad differential mounts bad axles a combination or all of the ...
race fever's user avatar
  • 3,353
4 votes

Where is extra fuel consumption in RWD and AWD cars dissipated?

There is no fundamental reason for RWD to be less fuel efficient than FWD. There are many advantages to FWD, fuel efficiency is not a driver. Most rear drive cars these days are sport(y) , ...
agentp's user avatar
  • 318
4 votes

Where is extra fuel consumption in RWD and AWD cars dissipated?

Your premise is wrong. The main reasons FWD cars are more commonplace today are: easier assembly: the entire drivetrain goes into the chassis as one complete assembly. unibody construction: FWD cars ...
tlhIngan's user avatar
  • 12.2k
3 votes

New car AWD tire replacement

At 1900 miles, you'll only need to replace one tire. Make sure the new tire is IDENTICAL to the other three. Ask the shop to measure the tread wear on the other tires, and to shave the new tire if ...
PeteCon's user avatar
  • 8,712
3 votes

Does 2WD mode save me gas over AWD(auto) mode?

It's unlikely that 2WD will save you a lot more fuel than AWD but it will save you more than zero. 2WD will definitely save you fuel over the 4WD Lock setting. The reality is that, no matter what ...
Bob Cross's user avatar
  • 24.4k
3 votes

My AWD car has a FWD option. Why/When would/should I use FWD?

Typically part time 4WD is not the same as AWD. Part time 4WD will actually lock the front and rear axles together, not providing a differential between them to handle the speed differences between ...
Lathejockey81's user avatar
3 votes

Where is extra fuel consumption in RWD and AWD cars dissipated?

It's difficult to reach a conclusive answer, but you're on the right track with the extra mass of a RWD transmission - the propeller shaft taking power to the rear wheels adds some considerable weight....
Gargravarr's user avatar
3 votes

BMW X5 E53 - Bord computer / AWD issues

Here are my observations (kudos to Myself for providing translations): DSC: Lenkwinkelsensor Versorgung [Steering angle sensor power supply] LWS: Schleiferfehler (Ableichbetrieb) [Slider ...
Zaid's user avatar
  • 39.1k
3 votes
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All-Wheel Drive/ 4WD system

The center differential in a typical Subaru transmission is housed inside of the main transmission case. For the MT models, these are typically viscous-coupling that control the torque split between ...
Shamtam's user avatar
  • 347
2 votes

Will different tread depths hurt my 4 wheel drive?

Look, I agree with the tyre rack article to a certain extent. But let's all use a little common sense. Using their example (as I do) in rotating my full size spare on my Wrangler. Even when I swap out ...
user19490's user avatar
2 votes
Accepted

What damage can one expect from towing an all wheel drive(awd) with 2 wheels down?

Read about how viscous coupling works Your mechanic was probably partially correct. The coupling has nothing to do with gears and you may not feel partial degredation in functionality. But I can see ...
Evren Yurtesen's user avatar
2 votes

New car AWD tire replacement

Usually the reason to replace all 4 is because if all 4 tires are worn, then putting on one new tire which will be slightly taller due to it not being worn will cause the awd to "activate " causing ...
cano's user avatar
  • 823
2 votes

Can a rear end collision cause damage to the brakes?

It's possible that the Eyesight system might be out of calibration after the accident. It's under warranty, so I'd take the car to the dealer for a checkup; they're going to know more than a body ...
PeteCon's user avatar
  • 8,712
2 votes

Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

Sorry to have to say it, but I think both the tire and rim will need to be replaced. The tire appears to be leaking already, and if it isn't now, then it will in the near future. The rim could ...
Jason Hutchinson's user avatar
2 votes

Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

The tire, yes, I would definitely replace it. You don't want that blowing out at highway speeds. And like others have said, have the shop check the diameters of the existing tires--the AWD system ...
Wildcat's user avatar
  • 21
2 votes

AWD indicator bugs out, not sure if there's actually a problem or if the light is just malfunctioning

The 4wd/awd systems on the GM's have a few different electrical components involved and are fairly easy to diagnose with the right testing equipment. If you can get it to shift into 4wd high, and ...
Milison's user avatar
  • 634

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