id say the same thing.a tire is about 1/2 inch thick.if it aint showin too bad on the outside with big cracks deaper than 2/32s you should be fine.ive heard the only real way to prevent dryrot is to keep em clean and to drive on them on a regular basis.the heat will keep the innards dryer and keerp the tire in good shape outside alsoIt is just showing more. The only fix is buying new tires. If they aren't loosing chunks don't worry about it.

