I am going to be buying "skinnies" for the front of Hyde for the upcoming season. I have never driven with 4" wide front tires before .... and coming from the land of lateral gri and autocross, I must confess that 4" wide rims/tires seem inherently dangerous.

Is there anything I need to be worried about?
... anything I should know?

I realize I do not want to demostrate the wonderful handling ability of the MR2 while these are fitted on the car ... I am speaking specifically about going down the track.

What should I expect?

less rolling resistance nd lower e.t's!
seriously though, there is less control, but in drag, not too bad.
take a practice pass or two to get the feel.

Just make sure you take sharp corners slower. Not sure if your car is lowered, but you want to have the correct camber set. I have seen pics of Weld Prostars that cracked do to miss-use and poor alignment.

Thanks for the heads up fellows. I really appreciate the help.

My car is lowered properly and I had an alignment done ... so I am assuming if I am only using these to go down the track I should be OK.

I am just just to a car that handles flawlessly ... so the change will be a bit disturbing. :D

What do you plan on running for rims and tires?

Weld Draglites 15 X 3.5
... I believe the tires are going to be Hoosiers.

My rears, I am using my 16" with BFG Drag Radials.

When money allows, I will get Draglites for the rear as well with a slick.

Nice. The BFG's have great hook for a street legal tire, but tread life sucks, that's why I went with Nitto's. I too plan on getting draglites with slicks and skinnys as soon as I have the extra cash.