I need input. I currently have pirelli diablos (120's/190's) on my 998. I'm thinking about getting the new multi compound bt-16. Is it REALLY worth the extra money? Does the hard center tread compound really get that much more mileage and how does the side grip compare? Any input would be helpful since I'm probably getting them in the next few weeks. Also, would I need to make any suspension adjustments with that type of tire change? Thanks alot.