After the first four, the eight van was replaced with a vacuum tire. The empty weight was light enough. Is that true?
Tube structure: tire pressure ring pad with inner rim lock ringTubeless (vacuum tire) structure: tire rimsDescription: light weight loss, but also reduce the tire heat, cooling fast, convenient handling, a nail is what it leaks slowly.Vacuum tyres are a big trend.
If the overload is serious, it is recommended not to change the vacuum of the rear wheel.How much specific can light, this really did not study.