Looks can be deceiving!!!

Current tires (GOOYEAR EAGLE GTII) are one year old. The previous tires were Firestone S/S Radials. They looked great, lots of tread and no obvious drying of the rubber. But, they lost air every night overnight from 30 psi down to 15 psi. The tire shop said they could not find a DOT rating on them or even a date code!

[QUOTE=kwoody]I wonder if the tire treatments we spray on may contribute to the break downs.  I have not read or heard of any connection.... just wondering.[/QUOTE]

I think so. Got no proof of it, but I think the stuff some folks use to keep their tars clean & shiny WILL deteriorate the rubber quicker, especially if the car sits outside most of the time, in the heat, and cold.
I saw a tech article a long time ago about using Armor All, and how it was contributing to the destruction of certain interior parts, depending on the actual make-up of the parts(plastic, vinyl, etc). This wasn't an ad for a competing product, but an actual lab tested research project. Wish I could remember where I found it. Since then, I have been really leery of using anything on my interior if the car will be outside afterward.

I just can't see using a petroleum derived product on (tire)rubber that won't cause a problem eventually. Park in a puddle of oil, and see what happens to your tire(s) after a week or so....they git skwishy!


btw...the tars on the '74 are the same ones I bought for it in 1998...
Adams' Apple2011-07-20 10:30:06

Joel,
that makes them there tars about 13 years old What I really want to know is how do you know about parking your tars in oil for a week or so to find they get squishey  Cant wait to hear this one you got an oil field in your backyard!
Rodney

I purchased new Indy 500s in 2005. As of today, does they have 0 miles on them. So.... are they still good or should I get new ones?  The car should be road ready in 2012.... I hope.

You better get busy, Dennis!!!!!     

[QUOTE=rod7515]What I really want to know is how do you know about parking your tars in oil for a week or so to find they get squishey  [/QUOTE]

Never said it was any of my cars...
It's just a common fact...petroleum-based oils will react with the rubber compounds used in tires, and soften them. Did you know that the black color of the rubber in tires comes from carbon black...which is one of the byproducts of refined oil? It's prolly also the reason they weather crack and fail!

Took the vette for its yearly inspection and had them check the date on tires. Ready for this one...built in 1999. Needless to say I went ahead and anted up for new ones. Sure hated to do it the old tires still looked new, but I figured it is better to unload $550 on new tires than a few thousand for body work from a blown tire.

Blowouts and Vettes do NOT go well together!

Reading all this and some other forums got me jumpy to checked mine today on old 1981 and date code was 4602 so based on info my threads were borne on 46th week of 2002......so think a new set of threads will be in near future. They still look good and good thread....but 2002, that's 9 years old now.