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When the road’s packed with snow or coated in ice, these chains bite down hard. The 3.2 mm square links dig in for dependable traction while keeping the ride smooth. The diamond pattern keeps more chain in contact with the road, so you get constant grip and better control even on slick grades or icy driveways.
No need to pull over and readjust once you start driving. The built-in Servo ratcheting device automatically tightens and centers the chains as your wheels turn, giving you a perfect fit every time. Just connect a few points, flip the switch to “drive,” and the system takes care of the rest. That means less time out in the snow and more time moving forward with confidence.
For vehicles with limited wheel-well space, clearance is everything. These chains meet SAE Class S standards, so they’re designed for tight fits without rubbing. The low-profile design works smoothly where bulky chains can’t, making them a solid choice when you want traction but don’t have much room to spare.
Built from high-quality titanium alloy steel, these chains resist corrosion and stand up to repeated winter use. The plastic bumpers shield your wheel rims from scratches while you drive through slush or road salt. After the season, dry them off and store them in the included durable case so they’re ready for the next snow.
Because they’re lightweight and compact, these chains tuck neatly into your trunk without taking up much space. When an unexpected storm rolls in, they’re easy to grab and quick to mount—getting you back on the road in minutes instead of searching for traction solutions.

These chains fit the following tire sizes:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Adam: Hi everyone. Adam with etrailer.com. Today we're going to be taking a look at the Pewag Servo RS Self-Tensioning Snow Tire Chains. Before ordering your chains, we do have a good fit guide on our website so you can type in your tire size. If you don't know where it is, here it is. This is what it's going to look like.
You're going to have three numbers, slash, about two numbers and then an R, and then you're going to have your rim size. Just put that into the fit guide and pick your tire so you have the right chains.Just so you guys know, be sure to pay attention to the description on our website. We have two different kinds of these. One is going to be 3.2 millimeters thick, and when I say that I'm talking about the links on the chains, and there's going to be another one that's going to be 3.5 millimeters thick. If you want the little bit bigger ones it's not too noticeable, but there is more metal there, so be sure to check our description so you pick the ones you want.These chains are going to get the job done, but let's focus on what sets these apart.
A lot of them are going to just be low carbon steel. These are titanium alloy, so they are going to wear down significantly less than some of the softer metals that you see on the market as well. Comparing them to the ladder pattern type, as you can see we almost have chain in all areas of our wheel. We have a little gap here, but it's going to provide a lot smoother ride than some of those thicker ladder style chains. Also, as you can see here, we don't have a whole lot of wheel well clearance.
These are SAE S class certified so you don't have to worry about scuffing up your wheel wells or anything like that because they do fit in here pretty nicely, and what really sets these apart is going to be just how they protect your rims and also how easy they are to install. These bumpers are going to protect all that from scratches or anything like that, but the coolest part about it is going to be this little gadget right here.The self-tensioner I've had a really good experience with. It's super easy and it's actually kind of fun. So if we we're to just take it off, you just rotate it like so, so we can just pull it out but then if we wanted to maybe just put them on, all you got to do is just twist this and it just self tightens for you. So as you start driving as well and these chain starts shifting, it's going to keep and continue to pull on those chains to keep it nice and tight.
It's super, super easy and something that's pretty unique to the chain game.One other thing that's a big plus for me with tire chains is the fact that we just have to kind of fish our chains behind our tire on the bottom, but then we do the rest up here. A lot of the ladder pattern style chains you have to lay on the ground and as you can see, we don't have a whole lot of distance between the ground and bottom of our vehicle, and if we're putting on tire chains, we probably got snow on the ground. I'm not really wanting to crawl around on the snow because I'm either stuck or just in a crummy situation. With this one, super nice. Everything's up top here. Make a connection here and down there, and then just twist the knob and then you're pretty much ready to go.I don't really live in an area where it gets too bad of snow, so usually I just kind of wing it. But if I we're to grab some chains, I would definitely recommend these. I messed with a lot of them here. As you can see on our website we have a whole lot of different kinds and designs for tire chains. These are just super easy. It's not a hassle, and at the end of the day, if you're putting tire chains on, you don't really want to have any other hassles coming with it. Make this as simple as it can and this is definitely one of my top picks, but one other thing that I want to show you guys to see how fast I can do it, just to undo everything and put it back in our case.I'm going to start just by twisting this, pulling this, unhooking this and this and this. I just lay it down. One thing I found to be easiest is actually just making it into a circle like so, just so it goes into that pack a little bit easier. These don't really tangle up too bad either, which is a plus for me. They do come in a pack of two, so if you have an all wheel drive vehicle like the one we're using here, you just basically get two sets whenever you buy them on our website, because you probably have the same tire both front and back.Compared to some of those canvas bags, this one is pretty tough. I don't really think the chains are actually going to poke through here over time, and it has a zipper so they're going to stay in there pretty easily, and with those canvas bags you kind of have to ball them up to carry them around. This has got a nice handle. It's going to make transporting them pretty easy.Now that we've gone over some of those features with you guys, let's just go ahead and install them. We're just going to grab one for now. Sort it out real nice. Set that to the side for now, and we're going to go ahead and do our best to untangle everything. Make sure everything just sits right, and lay them down. We want to make sure we don't have any kinks in our links or anything like that, that everything's laying properly. Another thing we do need to make sure of is on one side we're going to get an extremely smooth side and on the other side it's going to have a couple more jagged edges. We want that jagged side to be facing away from our tires, just to prevent any unnecessary wear.Now we can go ahead and slide one end, the one with our self-tensioner here, behind our tire into the other side. Take both ends and reach in that wheel well and make that connection just like so. Then while we're back here, might as well just drape these chains over on both sides. We want these cross chain sections here to be in the middle of our tread. Do your best. Once you have it somewhat done, we can take the red links here and our red hook, and just connect that. Make micro adjustments as you're going, and now all we really need to do is, as of right now I can't really pull on this cable here, so we're going to rotate this little red dial here to the open tab. Now that's going to allow us to pull that out. On the other end of it, we're going to get this plastic red piece here. We're going to do our best to try to connect our red hook to it like so. Now all you got to do, this is the fun part. You just got to rotate this back, you're pretty much ready to go.Now that we have these installed, we do suggest that you kind of roll over them a couple times, get back out and check, make sure everything's still nice and tight, and it probably should be because of this awesome self-tensioning system. You can do that same exact process for all of your wheels. This one right here is an all wheel drive version, so you can put it on your front or your back, either or, or all four. Well everyone, that just about does it for our look at the Pewag Servo RS Self-Tensioning Snow Tire Chains.
Customer Satisfaction Score:
89% were satisfied with this product
11% of customers were not satisfied
Ratings & Reviews

David
10/22/2025
In the year that I have owned these, I have used them exactly once and I can say that under conditions it can be a bit tricky and at times frustrating. I suspect that additional installations on the side of the road will improve the time and patience it takes to install them. Removal was fairly simple, but putting them back into the case can be a challenge - Do note, they will scuff up your rims, but that can be polished out. One key take away: Everythings easier on a dry run literally dry... lol

Arlo S.
1/26/2018
Very well designed product. Service person was very helpful in ing the correct size. I expect to buy the same brand of chains from you for my wifes car.

Utah
12/3/2024
Still great

Jack
11/26/2024
Having used them but a few times on a vehicle that surely doesn’t belong in the snow I’m amazed. Not by the performance so much but again in the ease of installation. As to performance, chains are chains in that they work as they should. Cable traction devices do not and do not last for beans. It’s perhaps why you see so many pitched off onto the road or someone off the side trying to unwrap them from their axle. These not only do the job but adjust immediately, stay on and take but a few minutes to remove.
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Liz
3/10/2024
These chains have been a lifesaver! We got stuck down in Leadville CO this weekend. No problems getting around on the slick roads. They took 5 minutes total put on on. About 10 minutes to remove because of the ice and snow. I wont go anywhere without these chains!