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Search tires by vehicle: How to find your version/option

Version/option can affect your tire size. It should be located on an information placard in your vehicle. In vehicles made after 2005, this placard will be located in the driver's side door. In older vehicles, the placard may be located instead in the rear passenger doorjamb, fuel filler, glove box or center console, or engine compartment. For example, the version/option of a Honda Accord EX V6 is EX V6.

search for tires Search tires by size: How to find your tire size

Metric, or tire type, defines the proper use of the tire. For example, a "P" designation means that it is a passenger car tire. An "LT" designation is for a light truck.

Tire width is the width of the tire measured in mm from sidewall to sidewall. This tire width is 215 mm.

Rim diameter is the width in inches or cm of the wheel from one end to the other. The diameter of this wheel is 16 in. Always replace a tire on a rim with another tire of exactly the same rim diameter designation and suffix letters.

Speed rating tells you the maximum service speed for a tire. A speed rating isn't, however, a recommendation to exceed speed limits, and doesn't indicate how well a tire handles or corners. Learn more about tire speed rating.

tire size info

Aspect ratio is the ratio of the height of the tire's cross-section to its width. On our example, 60 means that the height is equal to 60% of the tire's width.

Construction tells you how the layers of the tire were put together. "R" stands for radial, which means the layers run radially across the tire. "B" stands for bias construction, which means that the layers run diagonally across the tire.

Load index is an assigned number that corresponds with the load-carrying capacity of a tire. Most passenger car tire load indexes range from 75 to 100, but a few carry more. You'll also find the maximum load elsewhere on the tire sidewall, both in lbs and kg. Learn more about tire load index

Goodyear also offers high floatation tires. Your tire size will be included in the width and rim dropdowns.

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Tire load index

Load index is an assigned number that corresponds to the maximum weight that a tire can support when properly inflated.

Most passenger car tire load indexes range from 75 to 100, but some are higher. The chart displayed shows how load indexes translate to weight.

Load index

Load (lbs)

Load index

Load (lbs)

Load index

Load (lbs)

Load index

Load (lbs)
75852 831074 911356 991709
76882 841102 921389 1001764
77908 851135 931433 1011819
78937 861168 941477 1021874
79963 871201 951521 1031929
80992 881235 961565 1041984
811019 891279 971609
821047 901323 981653
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Tire Speed Rating

Speed rating specifies the maximum speed that a tire can handle. Speed ratings aren't, however, a recommendation to exceed speed limits, and don't indicate how well a tire handles or corners.

Tires can be sold with different speed ratings, so it's important to choose the tire that's best suited to your vehicle.

We recommend that you choose new tires with a speed rating at least equal to your old tires. If you mix tires with different speed ratings, be sure to observe the lowest speed rating.

Size speed symbolService description speed symbolMaximum speed (MPH)
Q99
R106
S112
T118
U124
H130
V130+
(Without service description) ZRAbove 149
W*168
ZRY*186
(Y)**Above 186

* W- and Y-speed ratings are subcategories of the Z-speed rating.

** Per the TR&A 2007 yearbook, for tires having a maximum speed capability above 149 mph/240 kmh, a "ZR" may appear in the size designation. For tires having a maximum speed capacity above 186 mph/300 kmh, a "ZR" must appear in the size designation and a Service Description, including the Y Speed Symbol, must be included in brackets.

2005 Porsche 911 Tires

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    Version/option can affect your tire size. It should be located on an information placard in your vehicle's driver's side door, rear passenger doorjamb, fuel filler, glove box or center console, or engine compartment. For example, the version/option of a Honda Accord EX V6 is EX V6.

    Entering your full address allows us to give you the most relevant pricing information and closest stores. Your information will not be used for marketing purposes or sent to a third party.

    Entering your full address allows us to give you the most relevant pricing information and closest stores. Your information will not be used for marketing purposes or sent to a third party.

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    THE RIGHT Porsche
    TIRES FOR YOU

    Goodyear has a large tire catalog complete with all-season tires, winter tires, sport performance tires, and more.

    Once we have all of the information on your Porsche, we can show you a tire selection with details on:

    • Tire pricing & rebates
    • Tire information & specifications
    • The ability to compare & save tires for your reference

    Enter all of your information in the tire finder to the left or select your 2005 Porsche 911's Version/Option below to continue.


    Need help? Version/option can affect your tire size. It should be located on an information placard in your vehicle. In vehicles made after 2005, this placard will be located in the driver's side door. In older vehicles, the placard may be located instead in the rear passenger doorjamb, fuel filler, glove box or center console, or engine compartment. For example, the version/option of a Honda Accord EX V6 is EX V6.

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