Grip from the Pontiac Solstice GXP's 18-inch Goodyear Eagle F1 tires is impressive, but at lower speeds this rubber squeals easily. Fortunately, the problem abated while running hard in local canyons. Or, maybe the wind noise and cabin buffeting overtook it. Either way, the Solstice GXP sticks. That's good, because the steering sure isn't interested in having much of a conversation and the brake pedal lacks emotion. During one panic stop, the Solstice took its sweet time coming to a halt. Around town, the suspension is supple, soaking up bumps without transferring them to occupants. Plus, the Solstice is impressively stiff, with noticeable cowl shake only on the roughest pavement or transitions.