Originally Posted By: TacticalDriver
Originally Posted By: CapriRacer
Jim,
Thanks. That was very helpful I'll try to remember to do that BEFORE I start asking questions.
So now I am wondering what the point of the photo was since that was just a demonstration of how the software produces a label.
Here is the source:http://www.dawsengineering.com/dewebsite2_003.htm
"Inflation Pressures for Plus-Size Fitments"
http://www.dawsengineering.com/dewebsite2_004.htm
I just read Dr. Daw's Article. He goes through the engineering, including standards, modeling, assumptions, margins and other considerations in the derivation of optimum pressure.
Some important points that he makes:
1. However, the selection of a correct inflation pressure is critical to the successful operation of the tire.
2. It is well-known that operation of a tire at higher than required pressures may cause uneven tread wear, degrade vehicle ride and comfort, and increase susceptibility to impact damage.
3. The correct setting of the cold inflation pressure is therefore critical to achieving the design intent of the tire in the field.
4. The selection of an inflation pressure for tire operation at less than maximum loads is critical to the success of the tire in that service.
5. In all these discussions, of course, “maximum inflation pressure” is taken to be the pressure at which the tire develops its maximum load capacity.
6. For most tires, this is the maximum pressure shown on the tire’s sidewall.
7. However, for passenger car tires, there are many types of tires that are labeled with a higher maximum inflation pressure that the pressure at which the tire develops its maximum load capacity.
In other words, all tires have an optimum pressure for a given application. To operate at maximum load, the optimum pressure, derived through analysis and prediction of flex, utilizing appropriate engineering safety factors, is often below the sidewall maximum. At no point in the entire article, does he advocate or recommend going above sidewall maximum.
And the label printed out by the software that he developed uses the sidewall maximum as the upper limit...
Hmmm...your quoted source sounds exactly like...Capriracer!
