Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: I have read that several people had issues with the bag &/or straps rubbing on the rear spokes.  I was wondering is there a rack you can recommend that would prevent this if I was to purchase these bags?
Document: The second comment concerns reviews about the bottom tie downs. It sounds like some people are only securing the strap around one post on the bike. That doesn't tighten very well. The strap is long enough to go around both the post on the bike and the rack or fender post. That tightens down very securely. Another thing I would recommend is taking the end snap off the strap and turning it around so that the tail of the strap is on the inside and away from the spokes.
These bags are good value for money, however I am still working out some fitment issues. I have the planet bike eco-rack and I guess it must be the geometry of the bike but this bag got caught up in my spokes the other day. I had a u-lock in one of the pockets and its bent the compartment a bit and caused the edge to hit the spokes, tearing up the bottom corner pretty badly.
The pannier is large enough and easy to mount on the bicycle rear rack. I would recommend this product to a friend.
These bags are made of nice strong.material. There are plastic inserts, that you must use, to make the bag keep it's shape. These inserts are to wide. You need to trim about a quarter inch off the width. They fit the common type of new rear bike rack perfectly. Tie the bags down with the provided straps, and they won't flap or blow in the wind.
...I had used it several times and it went well. Then, the other day, for no apparent reason, it got caught in my spokes. Fortunately, I was just starting off at an intersection. It torqued my leg and back, but had I been on a roll, I'm afraid it would have dumped me off, possibly into traffic. Kind of a scary experience. It didn't appear to misshape the bag, but on the same ride, it attacked me twice more.
The quality of these bags is surprisingly good. It is a bit of a pain putting the stiffeners in, but the bags work well without them, which makes it easier to get your bike in and out of narrow spaces or around corners. I put a full grocery sack in each side, about 30 pounds and everything was good. As to flapping straps, mine do flap but there is no way they would jam the rear wheel---I simply paperclipped the excess to the strap.
Cheap and dangerous. I do not recommend this product. My husband had this product on his bike rack and then went over a smallish bump and the bags got stuck in his spokes making his bike come to a screeching halt.
Several reviewers have made negative comments but this works well for me. I've carried home a gallon of antifreeze, my lap top and books to school and back, and various groceries with no problems. I can't seem to figure out how to install the plastic strips  but I stuff them in for shape and support. I stuck some Velcro on the side straps so they cannot become entangled in the spokes. I like the water repellent property and the reflective stripes.
Read the reviews about how the straps come loose and checked it before I rode. Used small bungees to make sure it didn't come off and I'm glad I did. The strapps loosened and dragged in my spokes. I removed the straps and used a coat hanger to pull small bungees through the slots and it works fine now. Threw straps away, cheap stuff that is useless. The only other compalint I have is the corners on the sides. The flaps tend to open and small things can bounce out.
The strap system to attach to rack did not work well. Because of this, the bag flexed ant got caught in spokes on first use. The strap buckle broke and I had to improvise an bungee to hold the pannier to the rack.In hindsight. I would only buy a pannier with tension springs to attach to rack.
Answer: yes