What is a Siped tire?

The practice of siping, or cutting extra slits into tire treads, is supposed to improve a tire’s snow and ice-biting ability. Tire dealerships typically charge around $15 or more to sipe tires.

Is tire siping illegal?

In most states, tire siping is illegal. This process modifies a footprint approved by the Department of Transportation, which will void its highway usability. Added slits will shorten the service life and hinder its performance, even if they increase traction.

Can you Sipe mud tires?

It is important to note that sipping only increases traction in mud, ice and snow, and will actually give you worse traction in both dry and wet conditions. I would not sipe a tire that did not come already sipped as it will most likely void the tire’s warranty.

Does siping tires help on ice?

In September, 2012, Consumer Reports tested aftermarket siped tires and concluded that although siping did slightly increase traction and braking on ice, it also increased braking distance on wet and dry surfaces by a few feet.

Should you Sipe all terrain tires?

Siping near the outside edges of the tire is not recommended and is done only on request. Experience has shown that siping to the outside can cause chipping (breaking off the rubber) on the edges. Up to a point, more sipes give more traction in snow, ice, and mud.

How do sipes work?

Your tire sipes help by disrupting the water surface and channelling some of the road water to the sides of the tire. In winter conditions, sipes increase traction when the end points of those tiny cuts open a bit as the tread is pushed against the road.

Can I Sipe my own tires?

So, I finally decided to sipe my own tires, with a grid pattern that would increase my traction on icy surfaces. I used a dremel and a diamond wheel, cutting diagonal lines that are about 1 mm wide and 2 mm deep. Each tire took about 45 minutes to do. Wow!

What is the purpose of a Sipe?

A sipe, also called a “kerf” is a small slit in the tire’s tread block that creates additional tread surface area for increased grip in wet, icy and snowy conditions.

How deep should tire sipes be?

New tires typically come with 10/32” or 11/32” tread depths, and some truck, SUV and winter tires may have deeper tread depths than other models. The U.S. Department of Transportation recommends replacing tires when they reach 2/32”, and many states legally require tires to be replaced at this depth.

What’s the best way to cut a tire in half?

The best cutting tool to use for a tire is a utility knife or a retractable box cutter. It’ll do the best job of cutting through the thick tire rubber.

Does siping tires help in snow?

As a tire rolls, the siping opens up to take in water and/or snow and remove it from the contact patch of the tire. The extra biting edges provided enhance grip for a variety of driving situations, particularly in inclement weather.