I'm looking for an all around pad for 90% street and 10% track usage. Any comments on the R-4S or Orange pads?

 

I can tell you that the Orange are great on the track but they squeal like hell on the street. If you are serious about tracking the car, I'd use a separate set of pads for street and track. They are very easy to swap.

 

My wife uses R4-S year round. They don't put out as much dust as other HP pads. I would go with the Pagid Orange pads on a GT3. The Pagid will provide a better bite than the R4-S.