Those spiffy Douglas tires were put on the car about a month before I bought it last year. It was my intention to replace them with OEM tires but they are no longer available. So after investing a fortune on the mechanical and repairing some rust and other cosmetic repairs I figured I’ll deal with these tires for a while. I have noticed this Q’s temp gage gets to it normal operating temperature in literally a few minutes where my other four cars take much, much longer to reach that point. I have no overheating issues and I do have a new thermostat, water pump and of course coolant after replacing the engine Good luck on getting yours corrected. This is the best place for solid advice I feel.