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Archive for June 27th, 2005
Question 94
Posted by C on June 27, 2005
Dear Sir
Iam working with John Deere India.I just want to know what is material composition by % in tractor tyres(like RSS4,SBR,carbon black,Nylon cord,wire&chemicals) what is the value addition of same.How to track the basic raw material?Is there is any site from which i can get online prices for these material on daily/weekly basis.How these material price is linked with crude oil prices and what is value contribution to that.Please clarify my doubt.
Regards
C MAHADEV IYER
Please send an email to our farm tire expert who will be able to provide an answer at jeff.vasichek@goodyear.com
I am the commercial truck expert.
Question 93
Posted by James on June 27, 2005
Does the tire industry have a formula for tire life increases for a reduction in temperature? I know if you run a tire low on air pressure and it builds up heat that the life expectancy is usually lower. If you run a truck tire 50-100 degrees higher then a comparible tire what would be your expected loss of tire life if any?
Heat is a tires worst enemy. If you can keep the internal tire rubber temperature under 210 F (1" below the tire shoulder), you can run that tire troublefree. The hotter the tire runs, the faster the tread will scrub off. Running hi speed, low inflation, and heavy loads will cause even faster treadwear.