SMT SINGLE PLT EXECUTIVE JET PLT LOST CTL DURING LNDG IN RAIN ON FRESHLY SEALED ASPHALT NON CTLED ARPT RWY RESULTING IN GOING OFF THE L SIDE OF THE RWY. THE ACFT SUSTAINED DAMAGE TO THE ENG NACELLES' LEADING INLETS AND ENGS.

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I BROKE OUT OF CLOUDS AT 2500 FT WITH RWY IN SIGHT. I CANCELED IFR AND ENTERED A R DOWNWIND FOR RWY 18. TSTMS WERE IN THE AREA WITH HVY RAIN. I MAINTAINED VFR THROUGHOUT THE DOWNWIND; BASE; AND FINAL. ON TOUCHDOWN; THE ACFT HYDROPLANED TO THE R. THE WIND WAS 270 DEGS AT 3 KTS ACCORDING TO ASOS. I CORRECTED BACK TO CTRLINE; AT WHICH TIME THE ACFT STARTED GOING L. BY THE TIME I GOT IT STRAIGHT; THE L MAIN TIRE WAS OFF THE SIDE OF THE RWY. AS I SLOWED; THE WHOLE ACFT EXITED THE L SIDE OF THE RWY. THE L MAIN WAS OFF FOR APPROX 1000 FT THEN THE NOSE FOR 500 FT THEN THE R MAIN FOR 100 FT. I ALSO CONTACTED A 2000 FT REMAINING SIGN WHEN I STOPPED. THE ACFT ENG HAD TO BE TAKEN OFF FOR OVERHAUL DUE TO MUD; GRASS; AND WATER THEY INGESTED. THE ACFT SUSTAINED MINOR DAMAGE TO LEADING EDGE HEAT SHIELD AND SIDE OF FUSELAGE. ALTHOUGH IT WAS RAINING AT THE TIME; I STILL HAD GOOD VISIBILITY. SOME CONTRIBUTING FACTORS WERE THE TIRES WERE WORN AND THE RWY HAD BEEN SEALED WITH LIQUID ASPHALT. THIS COUPLED WITH THE WET RWY PROBABLY WAS NOT A GOOD IDEA TO LAND. IF THE RWY WAS GROOVED IT MIGHT HAVE HELPED. IN RETROSPECT; THE FLT PROBABLY SHOULD NOT HAVE HAPPENED. I CALLED MY EMPLOYER 3 TIMES TO SEE IF HE REALLY NEEDED TO GO AND HE TOLD ME TO COME ON. NEXT TIME MAYBE INSTEAD OF THE PHONE CALLS; JUST SPELL IT OUT THAT TODAY IS NOT A GOOD DAY TO FLY. AS THESE CITY OWNED ARPT RWYS START CRACKING; THEY DON'T HAVE THE FUNDS TO FIX THEM RIGHT; SO THE CHEAPEST IS THE LIQUID ASPHALT SEALER. THIS IN ITSELF REALLY MAKES RWYS SLICK; THEN WHEN YOU ADD WATER THEY ARE LIKE ICE.