After listening to the 5 year replacement argument for as long as I've been here (4/06), I decided to check up on A-1's facts. The ELT example tore it for me. Come on Jon, talk about apples and oranges. Sheesh!

While we all respect Jon's conservative approach, in most cases he can verify his info, it's time for a little challenge.

It's very possible that the 5 year "rule" is well documented in fact but I sure can't find it on the internet. What I WAS able to verify is that the Michelin Warranty I found states that some of their tires are warranted to 5 years. Many of their truck tires have a 700.000 mile 7 year warranty. Nowhere does it recommend tire replacement in 5 years. Additionally, after reviewing the Prevost maintenance manual and service instructions I could find no reference to tire replacement based on age. Donde es el poop?

In checking Michelin's publications I found the following brochures: http://www.michelinrvtires.com/miche...e-material.jsp. Would suggest that a review of their Warranty also Service Life for RV/Motorhome Tires booklets would be helpful. Finally, as an added nail in he 5 year coffin is another brochure put out by Bridgestone. http://www.trucktires.com/bridgeston...V_Brochure.pdf. Page down to the heading "How Old is Too Old"

Also did a little research into warranties and other info. Bridgestone and Firestone both offer a 6 year prorated warranty. Goodrich's is 4 years, Goodyear's is 5 years and Michelin of course is 5 on the size tires we run on our busses. The availability of 12Rx22.5 tires seems to be dwindling for the tire treads we prefer in our coaches with Michelin XZ2, Bridgestone R250F, Goodrich ST230 and Goodyear G149RSA's as other choices. There seems to be more choices in the larger tires and Prevost issued a Service Bulliton M104-11 which recommends the Michelin XZA2 as their best choice. Hope this helps.

Prices seem to jump all over the place. Peter has made the observation we need to try and cut out some of the middle-man money on our tires. Any ideas?