Sparky,
The narrow "Top Fuel" tire which is a 2.5 x 17 Goodyear part number 808-102-089, as I understand, is limited to a max of 200 mph, although I have seen many of them run over 250 at the Salt. I do not know what the SCTA/Goodyear speed limit is on the new "Top Fuel" tire, 4 x 17 Goodyear part number 808-130-089 which is about an inch wider but still is made to fit a 17 x 2.5 wheel. Either one is a lot better than what you have on the front now.
Rex