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Old 03-24-2002, 06:30 PM   #1
edkwon
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Default Tire siping: Is it good or just a gimmick?

Whenever I go to Discount Tire they keep asking me if i want the tire siping service where the cut the multiple slits along the tire surface which is supposed to help traction and dissapate heat. Anyone know if this actually does anything for handling?

Ed
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Old 03-24-2002, 07:05 PM   #2
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Default Depends on what your looking for

Tire siping is actually a fairly old technology rediscovered. It was popular in the 1950's to improve traction on ice etc. It creates lots of edges that help bite into very slick surfaces like hard packed snow and ice. Doesn't do much for wet traction especially in deep water.

It reduces heat build up slightly by making the tire tread more flexible, but for high performace driving this is bad. There is a reason they use slicks or near slick tire treads for high performance tires. In the 1970's BF Goodrich ran street tires in racing. The only modification was to shave about half the tire tread depth off to increase tread stability.

In my opinion it is mostly a high profit margin additional service. That is why they push it so hard. If you need snow tires, buy real snow tires. If you want rain tires by real rain tires If you want performance tires etc.etc.

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Old 03-24-2002, 08:04 PM   #3
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Larry's right
Mike
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Old 03-24-2002, 08:27 PM   #4
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I don't have as much practical experience with tires as the two previous posters, but what they say makes perfect sense. I made an internship at a company that developed CAD software, and they had a special module for tire design. Even at that time (more than 10 years ago), tire design was a very elaborate and complex task. The shape and arrangement of the grooves are carefully optimized. Modern tires are high-tech products, and I'm sure that they're even more so than 10 years ago. So if somebody at a tire place offered to cut a few additional grooves into my new tires, my answer would be: No thanks!
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Old 03-24-2002, 08:38 PM   #5
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http://i-club.com/forums/showthread....ghlight=siping
http://i-club.com/forums/showthread....ghlight=siping

Look for my posts in those threads.... Long story short, hotrod and Mike are exactly right.

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Old 03-24-2002, 09:19 PM   #6
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Siping is good for SUV/light truck tires with an aggressive tread, like the BFGoodrich Mud-Terrain. I am getting my BFGoodrich Mud-Terrians siped on my Rover. I heard that doing it for tires that already have sip's doesn't do anything. I actually heard that you might chug some tread from the tire by doing that.
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Old 08-01-2011, 01:36 PM   #7
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Default Siping, wouldn't do it again.

I got four new tires siped a year ago, but wouldn't do it again. Thing is, I knew there was something wrong when my mom bought the same model and brand of tires and got them siped at Discount Tire in Dearborn, MI and they came out with plentiful and with deep cuts. So a year later I bought the same tire but went to Discount Tire in Commerce, MI and the siping was shallow and far inbetween. My points to you: 1) if there is great variability in siping practice, how can results be that consitant? 2) It may be my imagination, but after 15K miles I think they are wearing faster than normal, but I have no point of comparison to this same tire un-siped. 3). There is now a hum coming from one of my four tires when on a smooth blacktop highway at high speed that I can't trace to a cause (followed the tire after a tire-rotation). Must be the tread, right? Can't tell anything visually. So I wonder whether the siping was so inconsistent as to not even do all my four tires the same? Don't know.
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Old 08-01-2011, 04:40 PM   #8
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holy old and moldy thread bump, batman
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Old 08-01-2011, 06:39 PM   #9
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Someone's digging deep.

Hey, at least he searched rather than started a new thread. That's always nice to see.

In terms of siping, although winter's still a ways away, I am more inclined to buy a tire that has siping engineered into it from the start rather than having a normal tire siped. Want siped or feel you need it? Buy a good winter tire. I would not normally sipe a regular tire. It may help a little bit but also drastically reduce the tread life. An engineered tire will actually be designed to maintain good tread life and be siped more ideally to what actually functions well.
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Old 08-01-2011, 07:58 PM   #10
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siping works well on tires with appropriate compound for snow and ice conditions (there is a reason that all snow tire companies do it, as do most mud-rated offroad tires). But siping a tire that doesn't have a M+S compound isn't going to help anything.
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Old 08-02-2011, 10:48 PM   #11
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Siping is a worth while thing , I'd only sipe winter or mud type rated tires though and yes if they have a few sipes from the factory then you add more after the fact you will run the risk of Chunks from the tread.
All Nokian 4 season and winter tires are siped to the max they're awesome!!
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Old 08-03-2011, 06:18 PM   #12
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Old post isn't getting newer with age. Siping works, I'm not sure why this is a discussion. I donno why you'd sipe a new set of tires though - just buy some that have the right amount for what you're doing.
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Old 08-05-2011, 01:40 PM   #13
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They don't do this any more.
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Old 01-02-2012, 05:20 PM   #14
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Got my tires siped last week at Discount Tire, however they're under warranty and I was assured that the warranty would still stand if wear was increased. I did notice a difference in stopping ability (It was an icy, freezing rain day).
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Old 01-02-2012, 10:01 PM   #15
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You won't have any manufacturer warranty at all if you got them sipped. And Discount Tire does not have any warranty related to wear. They don't guarantee a certain mileage on a set of tires.
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Old 01-02-2012, 10:22 PM   #16
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Quote:
Got my tires siped last week at Discount Tire, however they're under warranty and I was assured that the warranty would still stand if wear was increased.
Once again, this thread isn't getting younger with age.

Once again, why in gods name would you have a new tire siped when you could just buy a snow tire to begin with? That's just asinine.

No manufacturer will recognize a warranty if you've siped the tires. That'd be stupid.
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Old 12-07-2014, 06:52 PM   #17
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to bump this thread that wont die again - Would siping an all season OEM tire improve winter snow/ice performance? Will it lessen the treadlife and effect typical on road warm weather/wet weather performance? Specifically the 14 forester OEM 17" tires. I only ask because the vehicle will be driven once a year to Michigan from Florida, during the xmas-newyear holidays and i would like to maximize winter weather performance but at $1000+ after install I can't justify a set of winter tires/wheels for once a year/2500 miles.

If I could do it for $700 or less, I probably would.
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Old 12-07-2014, 09:02 PM   #18
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Quote:
Originally Posted by GrundleJuice View Post
to bump this thread that wont die again - Would siping an all season OEM tire improve winter snow/ice performance? Will it lessen the treadlife and effect typical on road warm weather/wet weather performance? Specifically the 14 forester OEM 17" tires. I only ask because the vehicle will be driven once a year to Michigan from Florida, during the xmas-newyear holidays and i would like to maximize winter weather performance but at $1000+ after install I can't justify a set of winter tires/wheels for once a year/2500 miles.

If I could do it for $700 or less, I probably would.

here is no way to tell unless and until you do it and see
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Old 12-07-2014, 11:24 PM   #19
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Supposedly siping helps with snow and ice traction but ruins dry and wet.
Not to mention that any warranty is gone.

Maybe cheaper and safer to rent a car?

Krzys
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Old 12-08-2014, 11:48 AM   #20
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Quote:
Originally Posted by GrundleJuice View Post
to bump this thread that wont die again - Would siping an all season OEM tire improve winter snow/ice performance?
Probably.

Quote:
Originally Posted by GrundleJuice View Post
Will it lessen the treadlife and effect typical on road warm weather/wet weather performance?
The 97% of your driving that you do not in snow would suffer.

Quote:
Originally Posted by GrundleJuice View Post
Specifically the 14 forester OEM 17" tires. I only ask because the vehicle will be driven once a year to Michigan from Florida, during the xmas-newyear holidays
Your Forester on the stock all-season tires will do just fine in snow, no need to ruin your tires by siping them.
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Old 12-08-2014, 02:42 PM   #21
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Quote:
Originally Posted by Patrick Olsen View Post

Your Forester on the stock all-season tires will do just fine in snow, no need to ruin your tires by siping them.
Apparently the OEM Yoko geolander G91 are terrible in snow/ice. Lots of reviewers saying things that make them sound borderline unsafe.

I'll probably keep them on and see how it goes. I can probably get a set of winters up there if it's really bad.

Thank for the input.

Uncle Scotty, do you huff gas?
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Old 12-08-2014, 06:12 PM   #22
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Quote:
Originally Posted by GrundleJuice View Post
Apparently the OEM Yoko geolander G91 are terrible in snow/ice. Lots of reviewers saying things that make them sound borderline unsafe. I'll probably keep them on and see how it goes. I can probably get a set of winters up there if it's really bad. Thank for the input. Uncle Scotty, do you huff gas?
Just talked to a neighbour about his new Forester... he said he was disappointed in it's winter traction, he thought a Subaru would be much better... that's why he bought it... said it slips and slides all over the place... he might even get rid of it...!

I asked him what tires he was using, and he looked at me like I was asking him about rocket science... NO CLUE...!

He said, ahh, the ones that came on it... I said he should maybe look into getting some good winter tires... he grumbled something about having AWD... he shouldn't need winter tires. I said don't ditch the car until you 've driven it with some good tires... gave him a few tire brands to look at... will be interesting to see what he does.
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Old 12-08-2014, 08:43 PM   #23
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The best vehicle and awd technology only works as good as the traction the tire can provide. It's a shame that the OEM Forester tie is apparently so terrible. This seems like a RE92 type of overlook by Subaru.
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Old 12-08-2014, 10:04 PM   #24
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Quote:
Originally Posted by GrundleJuice View Post
The best vehicle and awd technology only works as good as the traction the tire can provide. It's a shame that the OEM Forester tie is apparently so terrible. This seems like a RE92 type of overlook by Subaru.
Car makers don't seem to understand that weak oem tires make the CAR, and the brand, look bad... I hear "this car is TERRIBLE in the winter..." all the time...! But i rarely hear people talk about the TIRES that came ON THE CAR...

I had a room-mate who's girlfriend drove a very nice Ford Probe GT... she was stuck all the time, and she would tell EVERYONE how terrible the car was in winter, and to NEVER buy one ... I looked at her tires one winter day, and was shocked to find 1/2 worn Goodyear Gatorback VR50 summer high performance tires...probably THE WORST winter tire ever...! Once we got her onto an appropriate winter tire, she loved her car again... FWD with good tires works very well in winter conditions.
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Old 12-08-2014, 11:04 PM   #25
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Quote:
Originally Posted by GrundleJuice View Post
to bump this thread that wont die again - Would siping an all season OEM tire improve winter snow/ice performance? Will it lessen the treadlife and effect typical on road warm weather/wet weather performance? Specifically the 14 forester OEM 17" tires. I only ask because the vehicle will be driven once a year to Michigan from Florida, during the xmas-newyear holidays and i would like to maximize winter weather performance but at $1000+ after install I can't justify a set of winter tires/wheels for once a year/2500 miles.

If I could do it for $700 or less, I probably would.
As far as I know, siping or tractionizing(very aggressive version) will only be done to new tires. They typically don't want any little pebbles or anything stuck in the tires getting caught in the machine...

you should be able to find some used tires for fairly cheap. "maximize winter performance" and using all season tires are mutually exclusive.
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