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View Full Version : What is the "up to maximum vehicle weight" field for


tbaleno
10-06-2006, 02:31 PM
On the sticker that recommends tire pressure there is another line "up to maximum vehicle weight." In my case it says 60psi.

Does anyone have the definition of what this means? Is this for the spare tire?

I've never paid attention to that line and can't find anything ont he internet about it.

GaryG
10-06-2006, 02:50 PM
That may be the spare tire because that is what those donuts usally call for.

GaryG

xcel
10-06-2006, 02:51 PM
Hi Tom:

___The following might help?

Tire Specs Explained (http://www.tirerack.com/tires/tiretech/tirespecskey.jsp)

Maximum Load

A tire's maximum load is the most weight the tire is designed to carry. Since a tire's load carrying capacity is related to the tire's size and how much inflation pressure is actually used, maximum loads are rated with the tire inflated to an industry assigned inflation pressure.

Additionally, load ranges are used to separate tires that share the same physical size, but differ in strength due to their internal construction. "Higher" load ranges are used to identify tires that have a stronger internal construction, and therefore can hold more air pressure and carry more weight.

Each load range has a assigned air pressure identified in pounds per square inch (psi) at which the tire's maximum load is rated.

P-metric tires used on passenger cars and station wagons are rated to carry 100% of the load indicated on the tire's sidewall (or listed for the tire in industry load/inflation charts). However, if the same P-metric tires are used on light trucks, (pickup trucks and sport utility vehicles for example), their carrying capacity is reduced to 91% of the load indicated on the tire's sidewall. This reduction in load results in causing light truck vehicle manufacturers to select proportionately larger P-metric sized tires for their vehicles to help offset the forces and loads resulting from a light truck's higher center of gravity and increased possibility of being occasionally "overloaded."

For example, P235/75R15 P-metric sized, standard load tires used on cars and light trucks would be rated to carry the following maximum loads at 35 psi:

Cars|Full Value|2028 lbs.
Light Trucks|9% Reduced Value|1845 lbs.

Additionally, while a tire's maximum load is the most weight the tire is designed to carry, its load carrying capacity at lower inflation pressures is proportional to how much inflation pressure is used. For example, P235/75R15 P-metric sized, standard load (SL) and extra load (XL) tires used on cars would be rated to carry the following loads at the inflation pressures indicated:

Air Pressure (psi)|20|23|26|29|32|35|38|41
P235/75R15 SL|1543|1635|1753|1852|1940|2028|
P235/75R15 XL|1543|1635|1753|1852|1940|2028|2105|2183

Note: 35 psi is the assigned "maximum load" pressure for standard load tires and 41 psi is the assigned "maximum load" pressure for extra load tires.

The above chart correctly shows that an extra load tire is not rated to carry any more load than a standard load tire when both are inflated to the same pressure (up to the standard load tire's "maximum load" pressure of 35 psi). This is because a tire's load capacity is a function of its size (which determines the size of the "air chamber"), its construction (which determines how much pressure can be held) and the actual air pressure used (which determines how many air molecules are forced inside the chamber). All tires with equivalent physical dimensions carry equivalent loads (until they reach their maximum load pressure).

The tire's maximum load is indicated in relatively small sized print branded near the tire's bead (adjacent to the wheel) indicating the appropriate value. Because tires are global products, their maximum load capacity is branded on the tire in kilograms (kg) and pounds (lb.). These values can also be found in the industry's tire load & inflation charts.

NOTE: P-metric and Euro-metric sized tires' "maximum load" inflation pressure may be, and often are, different that the tire's "maximum inflation pressure".
___You were not thinking about adding another 400 #’s of stereo gear to the poor thing now, were you ;)

___Good Luck

___Wayne

tbaleno
10-06-2006, 03:11 PM
maybe :angel:

tigerhonaker
10-06-2006, 05:53 PM
Wayne, It is not more Stereo Equipment. It is the Very-New-State-Of-The -Art-COMPUTER and all the Support Components to go with it. ;)

:p Terry

lee
10-06-2006, 10:39 PM
Look at the label again. To the left of the “up to maximum vehicle weight” and the 60 psi is the field that says it’s for the space saver spare. The label is trying to tell you that the space saver is good for the max weight of the vehicle, no need to unload if you have a flat. Honda dose not recommend putting 60psi in the other tires.

tbaleno
10-06-2006, 10:43 PM
Ahh makes total sense. I never thought about unloading the car if I had to use the spare.



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