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Archive for August, 2006
G647 RSS
Posted by james on August 11, 2006
What do you think of the G647 RSS for my Fifth-Wheel Trailer application. I currently have LT225/75R16 LRE Wrangler HT’s and have experienced ply separations on three out of the four. I am not overloaded (CAT scales) and run at the “Max” cold inflation of 80psi…but still had seperations…gotta do something…It gets HOT down south!!
The G647 RSS is a steel casing / steel belt tire that is designed for commercial applications. The Wrangler HT is a fabric casing / steel belt tire that is primarily for "consumer" usage. If you are having concerns with the performance of the Wrangler tire, I think switching to the G647 RSS is a good idea.
Nitrogen Inflation
Posted by Tim on August 4, 2006
By filling pure nitrogen gas instead of air in the tire, will lead to increase in tire life for the trucks?
In a product service bulletin issued by Goodyear, the following statements are made regarding nitrogen inflation:
"Nitrogen gas, as an inflation alternative to air, is becoming more prevalent in the market place and is being marketed as a benefit to the standard practice of using air to inflate tires.
Over a period of time both oxygen and nitrogen are able to penetrate through tire casings. However, oxygen molecules and nitrogen molecules are different sizes with oxygen being a smaller molecule than nitrogen. The size difference in the molecules allows the smaller oxygen molecule to permeate through the rubber at a more rapid rate."
Towing Tire Recommendation
Posted by Tim on August 3, 2006
I am interested in purchasing replacement rear tires for my GMC 1 ton duallie. The vehicle is used mainly for towing a 32′ enclosed race trailer to and from weekend racing events. I am interested in both summer highway and all season options. I am favoring an all steel cord casing such as Goodyear’s G647.
Tires for commercial vehicles (working trucks)typically have steel casings and steel belts. Tires for consumer vehicles (usually just used for personal tranportation) typically have a fabric casings and steel belts. Why? People who maintain working trucks find that it is worth the extra initial expense for steel/steel tires because they are more durable, are less likely to create a downtime situation and, when worn out, are very likely to be retreadable. I would call your situation more like a working truck than a "consumer truck".
How does inflation affect wear on bias vs. radial tires?
Posted by Tim on August 3, 2006
Does a bias tire wear differently from a radial tire when under or overinflated? For instance, does a bias tire wear more in center and a radial wear more in the edge when under inflated?
Overall, I think the bias tire's footprint shape is affected more by inflation pressure than the radial tire. This is due to the belts under the tread of the radial that create a flat tread surface in an overinflated or underinflated situtation. So, given the same underinflated condition or overinflated condition, the radial tire's wear would be fairly uniform across the tread. The bias tire would tend to "crown out" if overinflated and "dip in the center" if underinflated leading to center wear in the first case and shoulder wear in the second.