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Winter Tech Information
Whenever installing winter tires, drivers should recognize
that the personality & handling traits of winter tires will feel different than
the summer or all-season tires being replaced. Since winter tires are
dedicated to providing more traction in snow & on ice, extra care should be
taken by drivers to familiarize themselves with their vehicle's traction &
handling characteristics.
New winter tires begin with deeper tread depths & more open tread designs than
the tires used during the rest of the year. While the extra tread depth allows
new winter tires to provide more traction in deep snow, it also contributes to
more tread squirm & drivers may notice a reduction in handling responsiveness.
Most winter tires also feature softer tread compounds that remain pliable in
extreme cold temperatures. The most popular winter tires feature Q-speed
ratings indicating a maximum speed of 99 mph (160 km/h) that is typically
lower than the speed rating of the tires fitted to the car for the rest of the
year. Regardless of the winter tire's speed rating, the speed at which the
vehicle is driven cannot exceed the speed rating of the winter tire used.
Before tires are cured, a release lubricant is often applied to prevent the
tires from sticking in the mold. Unfortunately, some of the lubricant stays on
the surface of the tires, & traction is reduced until it is worn away.
Tires are comprised of many layers of rubber, steel & fabric that require a
break-in period to assure they achieve their maximum performance & your
maximum satisfaction. A few hundred miles of easy acceleration, cornering &
braking...at no more than legal speeds will allow all of those components time
to get used to working together while the mold release lubricant wears off.
The following applies to studded winter tires only.
Looking like carpenter nails with their shafts cut short before being inserted
headfirst into the tire, winter studs are made by encasing a tungsten carbide
pin into a cylindrical metal housing. Typically 80 to 100 studs per tire are
inserted into small holes molded in the tire’s tread design. The tread is
often lubricated (a 2% soapy water solution is desired) to facilitate
installation. A special tool spreads the rubber & inserts the stud into the
bottom of the hole. Once the stud is in place, the tool is removed & the tread
rubber compresses around the stud’s flat head & cylindrical housing to hold it
in place.
Because it takes some time for the lubricant to evaporate & the tread rubber
to compress around the stud, studded tires require a special break-in period.
Relatively slow driving (less than 31 mph/50 km/h) without hard acceleration
or braking is recommended for the first 62 miles (100 kilometers). This will
allow the lubricant to evaporate & the tread rubber to conform to the shape of
the stud.
Studded winter tires are not recommended for high speed driving because high
speeds (as well as excessive tire spinning) can cause studs to be ejected.
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