Wait...I have a daily driver jeep....First of all, if someone tells you that Jeeps are reliable, that person is not your friend.
The tire analogy falls flat, because the tires are part of the Jeep. A better analogy would be if the Jeep might throw a rod if you use anything but gas from Speedway, which is not top tier, but gets the job done ok. That's just how the Jeep is, it's part of the design.
The part where the Jeep analogy really works is that it's not really the best daily driver, but you still see a million of them on the road. Probably 90% of them will never go off-road, other than jumping the curb at Walmart. So it doesn't really matter if it's good for what it was designed for back in 1940. People just like them because they like them.