| There's no reason you couldnt run lower rated tires, they just dont want to sell them to you because of the liability.... as in you buy them, then drive faster then they are rated for and they destroy them selves and you wreck your car.... then you sue them for damages..
If you really want the lower rated tires, Just bring in the wheels and have them mounted + Ballanced. Its what I do with my compitition wheels/tires.
and no, the Speed rateing has No effect on the handling of the car... thats more a tread design and rubber compound issue.
__________________ Las Vegas SCCA
Autocross: Because Life is more fun on three wheels......
"I know Solo only comes one minute at a time, but what an intense, non-stop, fast-forward car control exercise minute it is. Sure, the velocity is higher in road racing, but inside the car it is slow-motion in comparison. In Solo, the turns come like machine-gun rounds. "
Randy Pobst | 
