This can be debated all day long. I do say there is a flaw in tire and fuel consumption in 5 and 6.
Real Le Manes, they can go sometimes up to 3 fuel refills before a set of tires.
NASCAR, they can go up to 2 fuel refills before tires.
GT/Touring cars can go a whole race without tires but still might need 1 fuel refill.
F1 has a mandated a Tire compound change, in race, so they have to change tires.
Now, there are many, many situations that could require a full set or pair of tires...
But as you said tires can wear oddly. I have had to change tires and no fuel, and sometimes wishing I didnt have to change tires cause they are fine and all I need is more gas.