my diablo tuner has a feature that turns traction control on/off you may want to contact them and ask if that may help, although it does give you more performance, that may be a bad thing?

 

Back when I had my '86 GT it had the oem 15" Goodyear Gatorbacks. The car was a handful in the rain to say the least. When the 16" Pony wheels came out in '91 I bought a used set that had Michelin XGT-V tires on them. What a difference. The traction in the rain was amazing, the car could be driven like a normal car now.

So what I'm saying is get some better tires, ones rated for better wet traction, it will make a difference.

 

Thanks for the responses. Looking at the Goodyear Eagle ResponsEdge. Any feedback on that tire?