I've been having achilles tendon problems. I usually run on the street and it started the day after I ran just three miles on a track. I've been stretching my calves and it seems to be making some minor improvements, but I think my shoes are part of the problem. I think they rub on it and make it worse. I just went on a leisurely bike ride with my son and wore my running shoes and my tendon hurt. When I ride my 'real' bike with my clipless shoes, I don't have any problem.
I currently have Brooks Glycerin. I used to have Brooks Radius, but they don't make them anymore. Anybody with this problem who can recommend a shoe that won't rub?
I have a normal arch and normal gait. I do slightly under-pronate and run on the outside of my foot, but I've been working on that. I think I'll need something with a slight cusion, but no stability control.
I am no doctor, but I had achilles problems for 15+ years. I went to a pediatrist one time and in about 3 minutes flat he had me diagnosed and fitted me for a heal lift.
I thought, "This guy is a Quack and never went back." So I suffered with Achilles Tendon problems. Still, I ran, played baseball, football, golf everything, but I was always in pain.
One day a buddy of mine, a plumber said, "Go to the drug store and buy a Dr. Scholls Lift for your heal." So I did.. Guess what, it fixed me.. I have not had any achilles issues in 5+ years.
Moral of the story? Listen to your Plumber.
Anyhoot... I went and fitted for new shoes at a local runners shop. The owner asked me why I was only wearing one lift. I told him the story. He said, "Okay.. but if you are going to wear one in the left, you should get one for the right shoe too. He indicated that the uneven-ness could cause problems." So, now I wear them in bith shoes.
That is my 2 pennies... You may ant to go see a pediatrist and not take my word for it... It is just my experience.
Edit: HMMM.. I wonder if I miss read your Achilles Tendon issue. I thought it was sore from being strained, not from being rubbed against your shoe. If so, My bad:(
656 Total Miles Since November 15, 2010 - 35 Miles YTD (1/20/12)
5K - 27:46 (07/24/2011)
20K - 01:59:39 (09/05/2011)
13.1M - 02:08:58 (08/07/2011)
26.2M - TBD in 2012
Orange, CT - 5K Chilly Chili Run - Time of 29:07 - 1/1/2012
If you really think that rubbing is part of the problem, try cutting off the tab that sticks up at the back of the heel. Just don't cut down into the heel counter (a piece of plastic that wraps around the heel). I've done this on some of my shoes in the past when I had the feeling they were rubbing on the achilles.