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Enough tread…but what about the whole casing?
If you drive 10,000 km a year, by the time a tyre is five years old, it will have rotated 25 million (!) times, even if you drive gently enough to leave some tread.
Following up on your advice last week on slow punctures, is it possible for air to leak out through the casing material itself, without an actual “hole” anywhere? Dev.
Yes, especially if the casing is very old and/or perished. Natural rubber itself is potentially “porous”, and many decades ago all tyres used that material and pressures had to be regularly topped up to compensate – even when they were relatively new and undamaged.
