Tire Speed Ratings Refer to More Than Just Speed. Tire speed ratings make a difference not only in regards to speed, but in regards to ride comfort, wear and cornering ability. Typically, the higher the speed rating the better the grip and stopping power but the lower the tread life.
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 (250 kPa) (table below), while P-Metric standards measure the load capacity at an inflation pressure of 35 psi (240 kPa).
AXLES: Currently high quality DEXTER axles are standard on all CornPro trailers. We use only DEXTER axles and replacement parts are readily available – from brake parts to replacement components and everything in between.
(Lea en español) Using a P195/60R15 87S tire size as our example, the 87S at the end of the size represents the tire's service description. A service description identifies the tire's load index and speed rating.
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This section is for any vehicles equipped with large, aggressive tires, similar to those made by Interco, BFGoodrich, Toyo, Mickey Thompson, and PitBull, although the data can be applied to any manufacturer of similarly sized tires.Make sure you check the "Ply" column when making your selection.
Sidewall Markings. There is a lot of information on the sidewall of a tire. Typically, you'll find UTQG ratings for treadwear, traction and temperature, the size of the tire, the load rating index number with a speed rating index, the construction type (bias or radial), the D.O.T. (Dept. of Transportation) compliance code, construction details, and of course, the make and model of the tire.
The values shown are calculated measurements based on the p-metric formula. Actual advertised tire height and tread width will vary from manufacturer to manufacturer for specific p-metric tire sizes.
All the information provided in the publications with the power of database selection plus the Tire Brand database. Use either TireSync webservice or your own server....
Unique Speed Ratings . The "Z" rating may appear on any tire rated above 149 MPH. Tires with "Z" ratings were originally thought to be to the highest rated tires a vehicle would require.