Don't you think the 5-year warning is part lawsuit-induced CMA, part marketing and a very tiny part technology that may or may not apply to any particular tire? Certainly rubber compounds change over time and these changes are impacted by time exposed to sunlight, ozone, heat and everything else in the environment. But it is the cords that hold the tire together. If they are broken or deteriorated by chemical change, all bets are off--regardless of mileage. I seem to recall that some club member is still running an original set of 8.00x15 Goodyear BlueStreaks on an early lettercar. No warranty expressed or implied here. C-300'ly, Rich Barber Brentwood, CA 1955 Chrysler C-300 (Still riding on a 16-year old set of Remington L-78 x 15's--low mileage, crack free and 3" WSW's clean up fair) -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of lettercars@xxxxxxx Sent: Wednesday, February 14, 2007 5:25 AM To: c300lover@xxxxxxxxxxxxx; Chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] Tires Tires Tires Hi All: And I was actually thinking about taking the "F" for a little drive today! How silly of me! Sorry, but I don't have any car (other than our '06 PT) that has tires newer than 5 years old. Oh, just remembered---the "F" does have bias old tires, so maybe I get a couple "safety points" for that. The "H" is in even worse shape. "Old" radial tires on original rims! Better keep BOTH these babys in the garage. 300ly, Gil Tallahassee, FL (The weather is not all that nice for a cvt. ride today anyway.) In a message dated 2/14/2007 1:30:27 AM Eastern Standard Time, c300lover@xxxxxxxxxxxxx writes: Those that get Old Cars weekly may have notice the reader question regarding the safety of old tires and when to discard. Answer from the tire manufacturers is 5 yrs regardless of mileage. The theory is that the vulcanization process is thought to continue beyond the mold resulting in chemical changes in the rubber such as hardening and brittleness making them prone to cracking. To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/