If I replace only two tires of a FWD car with snow tires, should they go in
front or back? The other tires are all season tires.
I used to think they should go in front, because braking, steering, and
acceleration all use the front wheels. However, a friend went to a tire
store and they put the snow tires in the back.
What is the reason for that?
merlotbrougham@hotmail.com - 07 Feb 2006 23:06 GMT
> If I replace only two tires of a FWD car with snow tires, should they go in
> front or back? The other tires are all season tires.
[quoted text clipped - 4 lines]
>
> What is the reason for that?
So he would go back and buy 2 more for the front.
Steve - 07 Feb 2006 23:13 GMT
> If I replace only two tires of a FWD car with snow tires, should they go in
> front or back? The other tires are all season tires.
[quoted text clipped - 4 lines]
>
> What is the reason for that?
The tire store's policy for hiring idiots needs revision?
jcr - 07 Feb 2006 23:51 GMT
Message from Steve written on 2/7/2006 6:13 PM:
>> If I replace only two tires of a FWD car with snow tires, should they
>> go in front or back? The other tires are all season tires.
[quoted text clipped - 6 lines]
>
> The tire store's policy for hiring idiots needs revision?
I disagree, they are hiring perfect idiots, it seems!
Steve - 08 Feb 2006 19:13 GMT
> Message from Steve written on 2/7/2006 6:13 PM:
>
[quoted text clipped - 10 lines]
>
> I disagree, they are hiring perfect idiots, it seems!
Touche!
AZ Nomad - 07 Feb 2006 23:18 GMT
>If I replace only two tires of a FWD car with snow tires, should they go in
>front or back? The other tires are all season tires.
>I used to think they should go in front, because braking, steering, and
>acceleration all use the front wheels. However, a friend went to a tire
>store and they put the snow tires in the back.
>What is the reason for that?
If you have great tires up front and bald ones in back, you run a greater
risk the rear swinging around during hard breaking. Personally, I've never
actually seen anything remotely like that happen when I've run with just
snow tires up front.
Put crappy tires up front and you won't be able to start moving in the
first place in snow and you'll risk skidding off-road during cornering.
Better advice is to get four snow tires. It won't cost much
in the long run as you'll avoid wear on your summer tires.
Eric B. - 08 Feb 2006 00:21 GMT
>>If I replace only two tires of a FWD car with snow tires, should they go
>>in
[quoted text clipped - 10 lines]
> actually seen anything remotely like that happen when I've run with just
> snow tires up front.
That's partially right. The theory behind it is an imbalance of traction
exists if you have better tires on the front OR the back. If there is an
imbalance of traction, it is better to have less traction on the front
tires. The reason is, if the front tires lose grip, it is usually easier to
recover from that situation before it causes major paperwork. So if the
tire shop puts the new tires on the FRONT, there is a possible liability
situation. Basically, they put the new tires on the rear as there is less
chance that they will get sued that way.
Unfortunately, the imbalance of traction theory (why they put the good tires
on the back) is only valid if the vehicle is being driven by an incompetent
driver. That is, a COMPETENT driver can handle an imbalance of traction
easily and safely, regardless of where the good tires are installed. You
know who you are. Just rotate the tires yourself when you get home.
Misterbeets - 08 Feb 2006 03:46 GMT
On dry pavement, snow tires would have less traction in braking than
regular tires. In snow, more. What to do?
Mike Walsh - 08 Feb 2006 04:15 GMT
Get a car with anti-lock brakes and put the snow tires on the front.
When I lived in the frozen north I always put the best tires on the drive wheels during the winter, whether front drive or rear drive.
> On dry pavement, snow tires would have less traction in braking than
> regular tires. In snow, more. What to do?

Signature
Mike Walsh
West Palm Beach, Florida, U.S.A.
AZ Nomad - 08 Feb 2006 04:27 GMT
>On dry pavement, snow tires would have less traction in braking than
>regular tires. In snow, more. What to do?
Go with 4 snow tires. Doesn't cost much more in the long run as you
save wear'n'tear on your summer tires.
Steve - 08 Feb 2006 19:17 GMT
>
>
[quoted text clipped - 19 lines]
> tires. The reason is, if the front tires lose grip, it is usually easier to
> recover from that situation before it causes major paperwork.
My view is that hitting the guardrail with the rear end (oversteer) is
no worse than hitting the guardrail with the front end (understeer).
Both suck.
> Unfortunately, the imbalance of traction theory (why they put the good tires
> on the back) is only valid if the vehicle is being driven by an incompetent
> driver. That is, a COMPETENT driver can handle an imbalance of traction
> easily and safely, regardless of where the good tires are installed. You
> know who you are. Just rotate the tires yourself when you get home.
It also COMPLETELY disregards the fact that different cars start out
with very different tendencies in the first place. The irony here is
that front-drive cars usually understeer like dumptrucks to begin with
(understeer==front loses traction before the rear) so getting the rear
end a little more free generally will bring a FWD car much closer to
neutral balance. Putting the less grippy tires on the front just
aggravates the car's inherent tendency to understeer.
John S. - 08 Feb 2006 19:29 GMT
> If I replace only two tires of a FWD car with snow tires, should they go in
> front or back? The other tires are all season tires.
[quoted text clipped - 4 lines]
>
> What is the reason for that?
Assuming this is a front wheel and not four wheel drive car, you would
want to put tires designed for maximum traction on the drive wheels.
If your friend has a car with rear wheel drive then the tire store was
correct to put the tires on the rear. If he has a car with front wheel
drive the tire shop screwed up big time.
Ulf - 08 Feb 2006 23:07 GMT
> If I replace only two tires of a FWD car with snow tires, should they go in
> front or back? The other tires are all season tires.
[quoted text clipped - 4 lines]
>
> What is the reason for that?
Inexperienced drivers prefer understeer. The rest of us can handle
oversteer so on a FWD car I'd put the snows on front. Then again, I
don't drive FWD cars, so it's the point is moot.
Ulf
ferretkona - 09 Feb 2006 12:05 GMT
This car has no reason to be on the road with other drivers until it
has all four tires studded..
If in question, this driver/owner should check with their respective
Highway Patrol.
Posting a question like this is like - Hey! can I take a chance on
your life by being too cheap?
Pitonggatang@gmail.com - 09 Feb 2006 14:48 GMT
Just bite the bullet and get four winter tires. If it prevents just
one
fender bender accident, the cost will have been covered.
Thomas Tornblom - 09 Feb 2006 21:28 GMT
The best tires should ALWAYS be put on the rear, no matter if the car
is RWD, FWD or AWD.
The theory is that you need to have the best grip during braking in
the rear to reduce the risk of having the rear wheels lock up and spin
the car around.
It is illegal in some countries (sweden comes to mind) to mix studded
and unstudded tires on a vehicle. In sweden you must have the same
type of tires (studded/unstudded) on both car and trailer if you're
pulling a trailer.
Steve - 09 Feb 2006 21:41 GMT
> The best tires should ALWAYS be put on the rear, no matter if the car
> is RWD, FWD or AWD.
Bovine excrement. The better tires should only be put on the rear IF the
car is prone to oversteer.
Thomas Tornblom - 09 Feb 2006 21:53 GMT
>> The best tires should ALWAYS be put on the rear, no matter if the car
>> is RWD, FWD or AWD.
>>
> Bovine excrement. The better tires should only be put on the rear IF
> the car is prone to oversteer.
Which covers any car that locks up its rears before the fronts...
AZ Nomad - 09 Feb 2006 22:08 GMT
>>> The best tires should ALWAYS be put on the rear, no matter if the car
>>> is RWD, FWD or AWD.
>>>
>> Bovine excrement. The better tires should only be put on the rear IF
>> the car is prone to oversteer.
>Which covers any car that locks up its rears before the fronts...
If you put crappy tires on the rears then you can be assured that
they'll lock up first.
Why not just go with all four snow tires? Doesn't cost much more in the
long run.
Steve - 10 Feb 2006 15:35 GMT
>>>The best tires should ALWAYS be put on the rear, no matter if the car
>>>is RWD, FWD or AWD.
[quoted text clipped - 3 lines]
>
> Which covers any car that locks up its rears before the fronts...
No. A car that normally understeers can still lock its rears first if
there's a problem in the brake proportioning system. Oversteer and rear
wheel lockup are different and un-related issues. If the rear wheels
lock first, its not going to matter HOW good the tires on the back are,
short of hot racing slicks with the consistency of chewing gum.
Misterbeets - 10 Feb 2006 01:56 GMT
It's not about cornering, but straight line braking.
Timothy J. Lee - 10 Feb 2006 18:31 GMT
>If I replace only two tires of a FWD car with snow tires, should they go in
>front or back? The other tires are all season tires.
Better to get four matching winter tires. If you have two winter tires
and two all season tires, one end will have much better grip in snow or
ice, while the other end will have much better grip in non-snow / ice.
That can make for some strange and surprising handling characteristics.

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y_p_w - 14 Feb 2006 02:53 GMT
>>If I replace only two tires of a FWD car with snow tires, should they go in
>>front or back? The other tires are all season tires.
[quoted text clipped - 3 lines]
> ice, while the other end will have much better grip in non-snow / ice.
> That can make for some strange and surprising handling characteristics.
One of the theories I've heard is that with regular tires, deeper
tread might as well go on the rear. The typical FWD car has most
of the weight over the front wheels. With less pressure on the
rear tires, the deeper tread helps the lighter rear end "bite"
into snow or reduce hydroplaning. Don't know if it really helps
with snow conditions though. Most FWD cars are supposed to have
chains on the front. Most problems in snow are because drivers
go too fast for the conditions.
Some go with narrower tires for the winter. Helps increase the
pressure on the contact patch.
I'd go with all four.