Selecting the right tire
for your needs and budget is something you can accomplish by using the search
modes and helpful information available on our web site.
Take a few minutes to
read these helpful guidelines, which will help you
understand key information.
Determine When You Need Tires
·
Tires are considered to
be worn out at 2/32 inch minimum tread depth.
·
In wet conditions 4/32
inch or less tread means a significant loss of wet traction due to shallower
grooves and sipes.
·
Determine How Many Tires You Need
·
If you need one tire
(due to damage, a defect, irregular wear, etc.) it is recommended that you
replace it with a tire that has a similar brand, line, speed rating, and load
capacity to your three remaining tires.
·
If you need two tires
due to poor or irregular wear, replace the tire with ones of similar or better
quality. The two new tires should go on the rear of your vehicle.
·
Replacing all four tires
is the best case scenario, as you are open to a wide range of options.
Determine the Tire Size
Most people replace their old tires with the same size that was on
the vehicle. If this is your choice, there are various locations you can check
to determine tire size.You can check the sidewall of the tire itself.
You can also find this information in the owner's manual for your vehicle.
Finally, you can check your vehicle's tire placard. The placard is often
located inside the glove box door, fuel door, doorpost, or door edge of your
vehicle. Changing tire size can
often improve the ride and performance of a vehicle through the following
methods:
·
By selecting a tire of
the next lower profile, you can significantly improve the ride quality and
handling of your vehicle. On small cars, a good example is to replace the
original equipment 155/80R-13 size with 175/70R-13. The tread is
almost an inch wider and the tire has a proportionately lower sidewall (however
the tire's height remains the same). Both of these features improve handling
and stability.
·
Plus sizing has become very popular. In
this application, the plus size tire is the same height as the original but its
sidewalls are shorter. This change delivers improvement in tire response and
handling.
·
Upsizing, or selecting a
larger tire, is a common option, especially for SUV and truck owners. Taller,
wider tires improve performance as well as ride quality On trucks, larger tires
can improve traction, load carrying capacity and appearance. Because cars and
trucks are equipped with computerized systems (ABS for example) that use
feedback from tire rotation, use these guidelines to select a larger tire:
1.
Make sure the tire has
load carrying capacity equal to or greater than what the vehicle placard
suggests
2.
Verify that the rim
width range is appropriate for the tire to be installed.
3.
Confirm that the
tire-to-vehicle clearance, lock-to-lock steering and suspension clearance is
such that no rubbing occurs.
Analyze Your Driving Conditions
A person who lives in
southern California will often choose a significantly different tire for their
car than someone who lives in Minnesota. There are exceptions to the rule,
however. The person who lives in California may go on a skiing or off-roading
trip. The person in Minnesota may only drive on plowed roads during snow
season. Therefore, their driving situations may include a variety of
conditions.
Here are some guidelines
to help you select the right tire based on your driving conditions:
·
Analyze your average
driving conditions to determine if you most frequently drive on dry roads, a
combination of both wet and dry roads, or primarily wet roads. Then, factor in
the possibility of seasonal extremes. Most tires purchased today are the
all-season type that appeal to the great majority of drivers who seek
acceptable performance and traction across the spectrum of possible driving
conditions in all four seasons. Look for the M&S symbol on the sidewall to
ensure the tire's mud and snow rating for winter use.
·
Consider seasonal tires.
All-season tires have performance and traction disadvantages since their design
elements are averaged. In the fast-growing performance market segment, two
newer strategies have become popular. In non-snow climates, summer or dry type
designs are emerging as year-round favorites. These designs feature far
superior dry handling and traction with wet performance ranging from acceptable
to excellent. Performance enthusiasts who live in more extreme winter climates
also use these new designs when seasons allow and change over to winter tires
once the snow begins to fall.
·
If you drive a pickup
truck or SUV, chances are you'll be considering a purpose-built tire design to
match your driving needs. These designs have tradeoffs including traction (both
on and off the road for various conditions), highway ride quality, and
performance. In terms of traction, designs range from HT (highway tread) to AP
(all-purpose) to AT (all-terrain) to MT (mud terrain) in order of aggressive
tread design. Highway ride quality diminishes as the tread design becomes more
aggressive.
You can pick tread
aggressiveness according to your needs, but be mindful of the highway ride
quality tradeoff. Most SUV owners select AP type tires for their balanced
highway ride and all-season traction. Sport truck tires with all-season tread
designs are quickly gaining popularity among SUV owners, however. These drivers
are looking for better handling when on the highway and are willing to settle
for less traction off-road. Meanwhile, pickup truck owners continue to sustain
their "purpose-oriented" tire selection, with AT tires remaining the
most popular type in this market segment. However, Sport truck tires are
showing gains among those who like great highway handling and need a tire that
can handle truck load capacities.
Buy the Best Quality You Can Afford
The old adage, "you
get what you pay for", may have been invented for tire buying. A good
exercise would be to calculate the total price for your tire purchase and
divide that by the miles of service to get the cost per mile. You'll quickly
see that the better tires are the better value. When you have mileage
guarantees to compare, this calculation is very easy, but there is another way.
When you are comparing tires within a particular brand, use the UTQG (Uniform
Tire Quality Grading) ratings (treadwear grade) to calculate value. Divide the
tread wear rating by the price. The highest number should be your pick if you
want the best value according to treadwear grade. This system won't help you
compare between brands, however, because there is no standardization for wear
scoring. Traction and temperature ratings are standardized, however, and are
useful for making comparisons between brands.
Consider Performance and Speed Ratings
Most people are aware of
speed ratings. Simply put, you need to buy a tire with the appropriate speed
rating for your vehicle. In Europe, the law mandates that the original
equipment tire must be replaced with a tire possessing the same or higher speed
rating. However, in the US you can buy a lower (and less expensive) speed rated
tire of the same size. If you do this, be aware that you are limiting your
vehicle's performance in terms of handling and speed capacity. Generally
speaking, a tire's handling response corresponds with its speed rating. Look at
it this way: you'll lose that crisp handling the manufacturer designed into the
vehicle and you will not be able to safely achieve the speeds the vehicle was designed
for if you use a lower speed rated tire than the original design. Conversely,
you can improve your vehicle's handling with a higher speed rated tire.
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