Henry, a lotta stuff you're asking makes you sound like you are one of those "design my car, tell me how to run it, get me a record" type individuals that have cropped up since the "World's Fastest Indian".
This is not intended as a criticism, but you will get TORN APART by a lot of us posters. AND get more than enough help/advice from the same.
The rookie question you asked about the "Goodyear 2011" tire makes me think your engineering school didn't emphasize RESEARCH enough.
Goodyear's people are easily reachable and their job is not to embarrass Goodyear.
Take this to heart. Yrs truly for instance, has humble fabrication/design skills with a 1/2 assede list of accomplishments and will be more than willing to pass on items in my areas of expertise. Along with many other more experienced, more knowledgeable others.
Think out yer project a little bit more be 4 you ask questions.
There' a a guy out there named TOM BURKLAND he should be and ONLY he, LSRENGINEER!
CHECK HIM OUT!