* Use a lower profile tire: Even with a smaller diameter wheel, you'd have to use a very low-profile tire to maintain the overall diameter of the tire and wheel combination close to the stock size. Low-profile tires have less sidewall, making them more susceptible to damage from potholes and rough roads.
* Roll or modify the fenders: Even with lower profile tires, the larger diameter wheels might still rub against the fenders and suspension components during turning or when the suspension compresses (e.g., going over bumps). This would require modifying or "rolling" the fenders to give the wheels more clearance.
* Potential suspension adjustments: You might need to adjust the suspension to increase ride height, but this is likely still insufficient on its own.
In short, while *technically* it might be *possible* with significant modifications, it's not practical or recommended for a 2000 Lincoln Town Car without a lift kit. The ride would likely be harsh and the car's handling could be negatively affected. Sticking to wheel and tire sizes recommended by the manufacturer is the safest and best approach for your vehicle.
