Wednesday, January 19, 2011

Winter Tires versus All-Season Tires, The Great Dilemma

(Part 1)

Almost every cars stock tires are junk. Sure, if you spend enough on a car it probably comes with acceptable all-season tires, but if you spend enough on a car you probably should be getting more than "acceptable" traction and handling from your cars most important equipment. Suffice to say, whether you spend $18,000, $30,000 or $80,000 your cars cheapest OEM equipment is probably the tires.

When I got my Suzuki SX4 AWD in the spring of 2008, I ran the stock tires till the winter of 08/09 which was enough time to put on 18,000 miles over 9 months. The Bridgestone Turanza EL400 weren't great, but they weren't entirely unsafe. Honestly, they were probably a little better or a little worse than 90% of cars under $40,000 OEM treads. As a matter of fact, these are standard on tons of cars such as the Mazda 3, Hyundais, and Toyotas. However, with all the warm wet or cold snowless winters we were having I figured I might be able to get away with a set of higher end all-season tires for the first year with the AWD system in an effort to save a few bucks while also putting better (safer) 3 season tires on my car. So the goal was to put new tires on between November and December and get the most out of the 1st years tread. I expected to run these only 1 year as my winter tire, then get dedicated winter tires the next winter.

In this video, you can see how average the Turanza EL400s handle ice vs. a Blizzak level snow and ice tire 


One thing to keep in mind is AWD or 4WD in theory are great. Without going into detail on the differences (and no, they aren't the same, they work completely differently), FWD/AWD/4WD all still require good tires to move the car. Bad tires on the best AWD system are much worse then really good snow and ice tires on the average front wheel drive (FWD) car. I can't tell you how many times I safely passed Subaru's and Jeeps driving down a snow covered Northway or languished behind them on one lane roads, while I was using top of the line snow tires on my front wheel drive (FWD) Ford Focus, and I'd guess they were using stock tires.

We had very few real snow falls in 08/09 and a very warm winter. When it did snow it was usually a warm slushy snow that was ideal for the Avid TRZ's which clear slush extremely well. Then we had a very cold and dry winter in 09/10 that saw very little snow till the early spring when the arctic high that was camped out over us all winter left. To my surprise, because of the conditions, I actually got 2 winters out of my Yokohama Avid TRZ's without really having any complaints. As a matter of fact, the first winter they were on par with a snow tire except on icy conditions. Even last winter I had very little trouble during rare and often unspectacular snowfalls. One note on the Avid TRZ's, they are a hybrid tire. They are built with "Three Ride Zones" which go from outside to inside on the tread. One of the zones is a winter tread compound. So, while this wasn't a dedicated snow tire, it was significantly better than 99% of the three season tires on the market on snow and ice.


The AVID TRZ features a silica-enhanced all-season tread compound that remains more pliable at lower temperatures to increase cold weather traction. The compound is molded into an asymmetric tread design featuring Three Ride Zones (TRZ). The outside zone features large blocks and continuous ribs to focus dry road cornering grip, while the center zone features circumferential grooves to concentrate on water evacuation and the inner zone features lateral grooves and sipes to emphasize wintertime traction. The tire's internal structure includes twin steel belts reinforced by spirally wrapped nylon, along with a carcass that sandwiches high-density sidewall filler between polyester cord plies to blend comfortable ride qualities with predictable handling. -via Tirerack.com




I gauge snow handling 2 ways. First, my subjective feel for the car with said tires on it. Does it break loose in low speed turns, does it struggle to gain traction of flat roads at a stop light, does it lock up the ABS on routine stops, does it struggle up moderate inclines. Secondly, how often does that ESP/traction control light on the dash activate. With the Avid TRZ's the first winter it rarely lit up at all, the second winter was quite similar.

For the past 6 weeks we've had occasional light snowfalls, the heaviest being about 10 inches, and each time I noticed my AWD Suzuki SX4 didn't have the sure footed handling I was used to. It was spinning coming out of driveways and worse it was drifting in slow speed turns over snow. Drifting is fun when you are doing it on purpose and can regain control, but even in low speed turns the car would break free pretty quickly and be tough to bring back around. The rear end breaking loose is the #1 cause of snow/ice related accidents, and it's the reason most reputable tire shops refuse to mount only front snow tires.


Snow and ice tires vs. all season on snow

My Avid TRZ's are clearly at the end of their life, with perhaps another 10,000 miles on summer roads, but they are done for the winter. Assuming I get 7-10k more, I'll have gotten 53,000 miles out of them. This is well below the 72k rating but it's also not bad considering 2 things. 1) I rotated them only at 10,000 mile intervals vs. the 7,500 recommended 2) I drove about 2,000 miles on dirt and gravel roads with them, sometimes aggressively. I also take mountain roads very aggressively (though mostly within the limits of the law) often taking hair pin turns at the limit of my vehicle. This meshed with what other SX4 drivers got in similar conditions, so I think the Avid TRZ's served their purpose.

In the past I've always used either Good Year Ultragrip Ice or Bridgstone Blizzak WS-60s for dedicated winter tires. The Blizzaks were actually a better tire, better on ice and snow, and cheaper but they were still close to $100 each at full price.

Not really wanting to spend $400 on a set of tires, I did a little research and the General Altimax Arctics came highly rated by end users. They also were ranked #1 in Tireracks test, and #2 overall by Consumer Reports (#1 when studded). The $67 per tire price didn't hurt either! Not really sure how General does it because a lot of users like the dry road handling of the Generals better than the Blizzaks. So one can only assume you are getting a much better tire for about 40% of the cost.

In the end it came down to trying to squeeze 4 seasons into another set of 3 season tires, probably an AT tire this time like the Yokohama Geolandar AT-S (for those with SX4's reading this, the 215/60/R16 will fit perfectly, though throw your speedo off by about 2% while raising the car .5in) or General Grabber AT2 (215/65/R16 just fits and adds 1.5 inches of ground clearance), or going with a dedicated winter tire. However,  the problem is even if the tread on a good 3 season tire is fine the first year or two for snow, it never handles ice like a dedicated winter tire. All Terrain tires are no better on ice than 3 season car tires because the compounds that make them stick to ice, also make them too soft for long term road use.  The Avid TRZ's were a rare exception, though only for half the life of the tire. Then there is the issue with road handling, AT tires just aren't best for road use, though they would be appreciated on rougher dirt roads or muddy spring roads that my car often sees in Vermont, NH, and occasionally the Adirondacks. Since I expect to have the SX4 for at least this winter plus next winter, and it's currently our main car, I figured this was a good time to get a dedicated tire. If the current winter weather pattern holds our snowiest months are in front of us. And if Murphy's Law proves true, putting these tires on my car will mean we don't see another snow flake this winter! So basically, I'm doing all of you snow haters a favor!

Stay tuned for the second part of this blog, where I give my initial impressions of the General Altimax Arctic M&S rated tire.

5 comments:

  1. congrats! keep up the good work/this is a great presentation.
    Wheels And Tires

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  2. You are doing a great jobs keep it up.. winter tyres...

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  3. I like your presentation which has lots of information about the winter tyres..

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  4. I would have to agree that mostly all cars stock tires are junk. I have always had replacement tires put on my cars because they handle bad weather better and drive a lot cleaner. I recently have been using Nokian Tyre tires because they are all purpose and can be used in all different weather situations. Obviously people live in different regions that experience different weather, but all purpose tires make it a lot easier for those unexpected storms. I would have to say all purpose tires are a better bet because you also do not have to go through the hassle of changing tires during different seasons.

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  5. I think snow tires are very important and should be used a lot more. If not, use tires that have a great winter grip. It is important to have a car that is save a reliable during snowy weather. I decided to use the new Nokian Hakkapeliitta tires which are great because the special pocket-type sipes on the tire shoulder help remove water out of the road surface, creating a stable and sure grip during slipper conditions.

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