Ok Highlander, I'm going to give your method a shot on the Lexus Petronas. Two questions. 1, What do you do with damper compression. Maybe I missed it, but I didn't see it in your post. 2, We all know ridehight has a major impact on car handling. On the Petronas, the max ridehight is 13/8 and I think the min has the same delta. Would you run lets say 0/0 or maintain the 5 delta, ie like 3/-2. It understeer stock, so in some way it would be good to run the nose a bit higher than rear. Kind of thinking of it, by your definition, I think I only had one balanced car. The only car I'll been able run with unchanged tune on different tires is a GT500 NSX. All my other tunes which I think has been fast on soft have had massive oversteer on hard tires. Will report back.