forum search,web saerch,search tire book in my new h3,,CANNOT find tire specs!!

the 32 page tire manual shows where to find codes,,NO INFO ON WHAT THEY MEAN!!

the net just shows tire dealers,specIALS not specs,

like rh s, load,speed traction,,just,ALL SPECS!,is it a secret? can u show me the info,,it shud be simple,,,

 

im not alone,,,?

 

I assume you are looking for information on a specific Hummer H3 tire?? LT285/75R16 Bridgestone Dueler A/T RH-S?? Try searching on the INTERNET, not intranet?

WOW, took me all of 10 seconds to find it.

http://www.bridgestonetire.com/tires...roduct_ID=1114

Size:LT285/75R16
S/D:116Q
Load Range:C
Speed Rating:Q
Sidewall:BL
Article #:190823
Approved Rims:7.5-9.0
Measuring Rim Width:8.0
Overall Tire Diameter:33.0
Overall Section Width:11.3
Static Load Radius:15.2
Min Dual Spacing:0.0
Tread Depth:16
RPM:630
RPK:392
Weight:51
OE Fitment:Hummer H3

 

you misunderstood me

your chart is like my book , it gives the codes but not what they mean,,no help

anybody know where to find stuff like rh s,speed,load,,,,just all the various specs for the codes in the nice chart??

 

The speed rating is the maximum service speed of a tire.
Rating Maximum Speed
Q 99 mph

Load Index / Pounds / Kilograms
116 2706 1275

Load Range Ply Rating Abbreviated Max Load Pressure
C 6 C 50 psi (350 kPa)


Everything you need to know can be found with a little effort. Here is a start for you:

http://www.tirerack.com/tires/tirete....jsp?techid=33

 

National technical standards regulations
The European Tyre and Rim Technical Organisation (ETRTO) and the Tire and Rim Association (TRA) are two organizations that influence national tire standards. The objective of the ETRTO include aligning national tire and rim standards in Europe.[1] The Tire and Rim Association, formerly known as The Tire and Rim Association of America, Inc., is an American trade organization which standarizes technical standards.[2] In the United States, the Office of Vehicle Safety Compliance, a component of the Department of Transportation, is one of the agencies tasked to enforce the Federal Motor Vehicle Safety Standard (FMVSS).[3] Canada has published tire regulations, such as the Motor Vehicle Tire Safety Regulations SOR 95-148.[4]

Explanation of tire codes

Tire code consists of a string of letters and numbers, as follows:

An optional letter (or letters) indicating the intended use or vehicle class for the tire:-
P: Passenger Car
LT: Light Truck
ST: Special Trailer
T: Temporary (restricted usage for "Space-Saver" spare wheels)
Use of the letter P indicates that the tire is engineered to TRA standards and absence of a letter indicates that the tire is engineered to ETRTO standards. In practice, the standards of the two organizations have evolved together and are virtually interchangable.[5]
3 digit number: The "nominal section width" of the tire in millimeters; the widest point from both outer edges.
/: Slash character for character separation.
2 or 3 digit number: The "aspect ratio" of the sidewall height to the total width of the tire, as a percentage. If the information is omitted, it is assumed to be 82%. If the number is larger than 200, then this is the diameter of the entire tire in millimeters.
An optional letter indicating construction of the fabric carcass of the tire:
B: bias belt (where the sidewalls are the same material as the tread, leading to a rigid ride)
D: diagonal
R: radial
if omitted, then it is a cross ply tire
2 digit number: Diameter in inches of the wheel that the tire is designed to fit. There is the rare exception metric diameter tires, such as the use of the 390 size, which in this case would indicate a wheel of 390 mm in diameter. Few tires are made to this size presently.[6]
2 or 3 digit number: Load index; see table below
1 or 2 digit/letter combo: Speed rating; see table below
Additional marks: See subheading below.
[edit] Light trucks
Some light truck tires follow the Light Truck Numeric or Light Truck High Flotation systems, indicated by the letters LT at the end instead of the beginning of the sequence, as follows:

The tire diameter is given for High Flotation tires and omitted from Numeric tires.
2 digit number: The diameter of the tire in inches.
x: Separator character.
3 or 4 digit number: The section width (cross section) of the tire in inches. If the tire diameter is not given, section widths ending in zero (e.g., 7.00 or 10.50) indicate the aspect ratio is 92%, while section widths not ending in zero (e.g., 7.05 or 10.55) indicate the aspect ratio is 82%.
Construction of the fabric of the tire:
B: bias belt
D: diagonal
R: radial
2 digit number: Diameter in inches of the wheel rim that this tire is designed to fit.
LT: Designates that this is a Light Truck tire.
Load index and speed rating are not required for this type of tire but may be provided by the manufacturer.
2 or 3 digit number: Load index; see table below.
1 or 2 digit/letter combination: Speed rating; see table below.
Additional marks: See subheading below.
[edit] Load range
The Load Range Letter on light truck tires indicates their ply rating.[7]

Load Range Ply Rating
A 2
B 4
C 6
D 8
E 10
F 12
G 14
H 16
J 18
L 20
M 22
N 24

There is a common misconception that there is a specific equivalence between a tire's Load Range (or ply rating) and its inflation pressure at which it achieves its maximum load.[8] In reality, tires of the same Load Index may require dramatically different pressures to achieve their published load ratings.

This can be seen by consulting the standards published every year by the industry standards group, the Tire and Rim Association. As an example, their 2010 Year Book shows that Load Range C tires may require 35 PSI or 55 PSI, Load Range D tires may require 50 PSI or 65 PSI, and Load Range E tires may require 65 PSI or 80 PSI to achieve their Load Index and Maximum Loads.[9] This is also the case in the tables published by major tire makers, who do follow these TRA standards and have multiple inflation pressures for the same Load Range in the tires they sell. [10]

It is essential to consult the guides like those just mentioned when making tire substitutions, and to read exactly what is imprinted on the sidewalls of tires. A different size of tire with the same Load Range may require a higher inflation pressure, and may fail in use if under-inflated.

[edit] Load index
The load index on a passenger car tire is a numerical code stipulating the maximum load (mass, or weight) each tire can carry. For Load Range "B" tires, ETRTO (ISO-Metric) standards specify the load index rating at an inflation pressure of 36 psi while P-Metric standards measure the load capacity at an inflation pressure of 35 psi. The two standards vary slightly with the capacity required for different inflation pressures.[11]

While all ETRTO tires of the same load index will have the same maximum load (in pounds), P-Metric tires with the same load index may have different load capacities depending on the tire size. The TRA Inflation Tables must always be consulted when comparing the load capacity of P-Metric tires—the Load Index alone is not sufficient. An example: a P205/50R15 Standard Load tire has a load index of 84 and a load rating of 1113 pounds at 35 PSI. A P215/50R13 with the same load index of 84 only has a load rating of 1091 pounds, also at 35 PSI.[12]

Standard Load Inflation Table for ETRTO Tires[13] Code Pounds Kilograms Code Pounds Kilograms Code Pounds Kilograms Code Pounds Kilograms
60 551 250 80 992 450 100 1,764 800 120 3,087 1,400
61 567 257 81 1,019 462 101 1,819 825 121 3,197 1,450
62 584 265 82 1,047 475 102 1,874 850 122 3,306 1,500
63 600 272 83 1,074 487 103 1,929 875 123 3,418 1,550
64 617 280 84 1,102 500 104 1,984 900 124 3,528 1,600
65 640 290 85 1,135 515 105 2,039 925 125 3,638 1,650
66 661 300 86 1,168 530 106 2,094 950
67 677 307 87 1,201 545 107 2,149 975
68 695 315 88 1,235 560 108 2,205 1,000
69 717 325 89 1,279 580 109 2,271 1,030
70 738 335 90 1,323 600 110 2,337 1,060
71 761 345 91 1,356 615 111 2,403 1,090
72 783 355 92 1,389 630 112 2,470 1,120
73 805 365 93 1,433 650 113 2,536 1,150
74 827 375 94 1,477 670 114 2,601 1,180
75 853 387 95 1,521 690 115 2,679 1,215
76 882 400 96 1,565 710 116 2,756 1,250
77 908 412 97 1,609 730 117 2,833 1,285
78 937 425 98 1,653 750 118 2,910 1,320
79 963 437 99 1,709 775 119 2,999 1,360

Speed rating
The code is made up of one or two letters, or one letter and one number. It indicates the maximum permitted speed that the tire can sustain for a ten minute endurance without being in danger.[citation needed]

Speed rating Code mph km/h Code mph km/h
A1 3 5 L 75 120
A2 6 10 M 81 130
A3 9 15 N 87 140
A4 12 20 P 94 150
A5 16 25 Q 100 160
A6 19 30 R 106 170
A7 22 35 S 112 180
A8 25 40 T 118 190
B 31 50 U 124 200
C 37 60 H 130 210
D 40 65 V 149 240
E 43 70 Z over 149 over 240
F 50 80 W 168 270
G 56 90 (W) over 168 over 270
J 62 100 Y 186 300
K 68 110 (Y) over 186 over 300

Prior to 1991, tire speed ratings were shown inside the tire size, before the "R" character. The available codes were SR (112 mph, 180 km/h), HR (130 mph, 210 km/h), VR (in excess of 130 mph, 210 km/h) and ZR (in excess of 149 mph, 240 km/h). The ZR code is still in common use, often combined with a W or Y speed code.

Tires with a speed rating higher than 186 mph (300 km/h) are indicated by a Y in parenthesis.[citation needed] The load rating is often included within the parenthesis, e.g. (86Y).

In many countries, the law requires that tires must be specified, and fitted, to exceed the maximum speed of the vehicle they are mounted on, with regards to their speed rating code (except for "Temporary Use" spare tires). In the European community, tires that are not fit for a car's or motorcycle's particular maximum speed are illegal to mount. The sole exception are M+S tires, where a warning sticker stating the allowed maximum speed must be placed within clear sight of the driver inside the vehicle. Some manufacturers will install a speed governor if a vehicle is ordered with tires rated below the vehicle's maximum speed.

If a tire is replaced with a lower speed rating than originally specified by the vehicle manufacturer, then this may render the vehicle insurance invalid

Rim widths
To determine the allowable range of rim widths for a specific tire size, the TRA Yearbook or the manufacturer's guide should always be consulted for that specific tire—there is no "rule of thumb."[15] Running a tire on a rim size or type not approved by its manufacturer can result in tire failure and a loss of vehicle control.

There are numerous other markings on a typical tire, these may include:

M+S, or M&S: Mud and Snow; all-weather tires, with above-average traction in muddy or very light snowy conditions, and for low ambient temperatures. Not a winter tire unless it has the snowflake and mountain symbol. Spike tires have an additional letter, "E" (M+SE).
BSW: Black SideWall
WSW: White SideWall
OWL: Outline White Lettering
VSB: Vertical Serrated Band
E4: Tire approved according ECE-regulations, the number indicating the country of approval.
030908: Approval number of the tire
DOT code: All tires for use in the USA have the DOT code, as required by the Department of Transportation (DOT). It specifies the company, factory, mold, batch, and date of production (2 digits for week of the year plus 2 digits for year; or 2 digits for week of the year plus 1 digit for year for tires made prior to 2000). Although not law, some tire manufacturers do not suggest using a "new" tire that has been sitting on the shelf for more than 6 years (Ford Motor Company) or 10 years (Cooper Tire citing a tire association recommendation).[citation needed]
TL: Tubeless
TT: Tube-type, tire must be used with an inner-tube
Made in ...: Country of production
C: Commercial; tires for light trucks (Example: 185 R14 C)
B: Bias belted; tires for motorcycles (Example: 150/70 B 17 69 H)—diagonal construction with belt added under the tread
SFI, or Inner: Side Facing Inwards; inside of asymmetric tires
SFO, or Outer: Side Facing Outwards; outside of asymmetric tires
TWI: Tread Wear Indicator; a device, such as a triangle or a small Michelin Man icon, located where the tread meets the sidewall. It indicates the location of the raised wear bars in between the tire tread channels.
LL: Light Load; tires for light usage and loads
SL: Standard Load; tire for normal usage and loads
XL: eXtra Load; tire for vehicles of heavier standard weights
RF: Reinforced tires
Arrows: Some tread designs are "directional", and designed to perform better when driven in a specific direction (clockwise or counter-clockwise). Such tires will have an arrow showing which way the tire should rotate when the vehicle is moving forwards. It is important not to put a "clockwise" tire on the left hand side of the car or a "counter-clockwise" tire on the right side.
M0: Original tires for Mercedes-Benz
N*: Original tires for Porsche
"Star": Original tires for BMW
To facilitate proper balancing, most high performance tire manufacturers place laso red (uniformity) and yellow (weight) dots - marks on the sidewalls of its tires to enable the best possible match-mounting of the tire/wheel assembly.[16]
[edit] Tire geometry
When referring to the purely geometrical data, a shortened form of the full notation is used. To take a common example, 195/55R16 would mean that the nominal width of the tire is approximately 195 mm at the widest point, the height of the side-wall of the tire is 55% of the width (107 mm in this example) and that the tire fits 16-inch-diameter (410 mm) wheels. The code gives a direct calculation of the theoretical diameter of the tire, and for a size shown as "T/A_W" is equal to T*A/1270+W in inches; here 195*55/1270+16 = 24.44 inches.

Less commonly used in the USA and Europe (but often in Japan for example) is a notation that indicates the full tire diameter instead of the side-wall height. To take the same example, a 16-inch wheel would have a diameter of 406 mm. Adding twice the tire height (2×107 mm) makes a total 620 mm tire diameter. Hence, a 195/55R16 tire might alternatively be labelled 195/620R16.

Whilst this is theoretically ambiguous, in practice these two notations may easily be distinguished because the height of the side-wall of an automotive tire is typically much less than the width. Hence when the height is expressed as a percentage of the width, it is almost always less than 100% (and certainly less than 200%). Conversely, vehicle tire diameters are always larger than 200 mm. Therefore, if the second number is more than 200, then it is almost certain the Japanese notation is being used—if it is less than 200 then the U.S./European notation is being used.

The diameters referred to above are the theoretical diameter of the tire. The actual diameter of a specific tire size can only be found in the TRA Yearbook or the manufacturer's data books.[17] Note that the tire's cross-section and diameter are always specified when measured on a wheel of a specified width; different widths will yield different tire dimensions.

 

WoW! You TAINTAH is a genius!!!