I have never seen anything but Goodyerar RSA's on any 2003, 2004 or 2005 GT froim the factory and all in size 205X50X17 and all on 6" wheels. The wheel width make it very difficult to upgrade the size very much. The only bigger tires I have seen that will fit those wheels are 215X50 (25.5" Dia)and 225X50 (25.9" Dia). Wider higher aspect ratio tires will fit (225X55 27.1" Dia) and the same widith in a 45 series tire will fit also (205X45 24.3" Dia)). Some of these sizes may be very hard to find in a performance tire depending on manufacturer. BTW tire Dia differ with both tire manufacturer and tire style. Our Goodyear RSA in size 205X50X17 has a diameter of 25.4" and a revolution per mile of approx 822.
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06 GT Auto, Cool Vanila Exterior, Presto Change O 3bl, Cargo Mat and Net, Billet Oil Cap, Yoko Avid 4Vs Tires, 03 GT Wheels, 4 Chrome Door Handle Screw Covers, MOPAR Mud Flaps, H&R Rear Sway Bar, Freedom Strut Tower Bar, Rear Door Sill Covers.
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