I had a disappointing experience with General Tires. I ran altimax HP's on my accord. Over 65mph I got bad shaking. After reading many many reviews on tirerack and elsewhere there seemed to be an underlying issue of the quality of the tire.
Basically every so often General would do a poor job of constructing the plies in the tire and the overlap would end up too close or right on top of each other creating a heavy spot you couldn't balance away. Also tire pressure seemed to be a large factor in whether or not you felt this. Mine did not become a problem until I had put 5000 miles on them and the wear/break in introduced this factor. I was far beyond returnable. I also felt that they had an incredibly soft sidewall which led to a loose wobbly feeling in the car. I ran close to 38psi in all tires and the car became much more stable. Overall a nice looking, well priced, quiet riding tire that unfortunately hides a flaw until slightly worn. I have over 25000 miles on them now and can say they do wear well but a second tire is beginning to "hop" a little. They do have a 50,000 mile, tread depth only says the store, warranty - but since I haven't been able to wear them down I can't exchange them.
Never bought another thing from the shop I got them from since they kinda said eh sorry dude, buy new tires.
I did see the altimax arctic. Looks decent but they may have the same issue. It was very hard to find several reviews with the same issue so it really seems like they are hit or miss or the reviewers hadnt gotten enough miles. It's obviously not a consistent problem but is quite unsettling when it happens to you.
I know it's the tires cause I ran them as summers and switching to the snow tires on the same wheels stopped the problem.