DITCH the 2001 tires BEFORE they Ditch YOU. Tread does not matter, hardness-traction does.
Gen 2 18" Set PS2 under $1580.
Kumhos under $1100, but you WONT get 4000 miles on em, and they age and harden faster. Not good cold wx or rain.....
[SRT10 PS2 18-19" set of four under $1670/set.]
PS If your budget is SHOT you could possibly find a tire store that does SIPING. If you MUST drive hockey-puk-hard tires with GOOD TREAD, you can 'renew' the tread somewhat marginally by SIPING them. Thousands of razor-cuts are 'siped' into the rubber, intruducing tread squirm and surface area. This ruins the speed rating, and should NOT be done for even one track lap.....but to 'renew' some life if your budget is desperate, siping may be an option for you lurkers out there with minimal funds.........