Are other people having problems with the grooves making their car sway like your driving drunk? Maybe I need an alignment? I put on 300 miles yesterday from Seattle to Vancouver, Wa. It was terrible unless I drove in the fast lane. It looks to me the grooves are from the wear in the tire tracks. I also bumped my tire pressures up to 45psi. Its mostly 70mph also.
Apparently this is also a problem with motor cycles. Pounding on the freeway essentially wears gutters. I have found that riding up on the shoulder of the gutter works pretty well, run just a little right of where 90% of the traffic goes.
2000 Insight, red 160k. "Tardis"
IMA battery replacement done at 97 K.
Milage: 65mpg on 80 mile commute summer, 55 in winter.
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