The V710 tires are new I've only competed in one auto-x with them so they provide significantly more grip then the super wide but old V70 tires.
The V710 tires seem magical because I'm sure they can easily allow a stock Insight to pull over 1 G in corners.
I used the 235/45R13 tires at the Solo 1 track time trials and it was fun.
But the significant weight increase hurt my lap times. Specially since I later found that my lightweight 185/60R13 Toyo Rs on 8lb rims from last year have a rubber compound that is still soft and therefore has more grip!
Everytime I put these huge tires on my Insight at least half a dozen people tell me how awesome and agressive it makes the Insight look :twisted: