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The TPMS will signal a tire pressure loss in the display. That's your warning to slow down and drive no more than 50 miles to a place you can replace the tire. That leaves a lot of places that are too far away to help. But at least you can get to safety. Unless you hit something hard and blow out the sidewall, in which car you're stuck.
Replace the tire? Yes, run flats can not be repaired. And they are more expensive. And they don't handle as well. And they emit more road noise. And they can cause a rougher ride. It's up to the individual whether they are worth it or not. I carry a small pump, a can of fix-a-flat, and a tire plug kit instead.
The one tire problem we had was on a road trip. A road colored insulator caused a sidewall blowout. That was 50 miles from the nearest town. That's why I have AAA with their extended tow option.
Replace the tire? Yes, run flats can not be repaired. And they are more expensive. And they don't handle as well. And they emit more road noise. And they can cause a rougher ride. It's up to the individual whether they are worth it or not. I carry a small pump, a can of fix-a-flat, and a tire plug kit instead.
The one tire problem we had was on a road trip. A road colored insulator caused a sidewall blowout. That was 50 miles from the nearest town. That's why I have AAA with their extended tow option.