Review on 🛴 Aibiku Upgraded 8.5-Inch Thick Inner Tubes - Compatible with Xiaomi M365 / Gotrax Electric Scooter - Inflated Spare Tire 8 1/2 x 2 (Pair) by Joel Wright

Don't buy those cheap tubes from China. The valve stems are poorly designed and receive no side pressure at all. This means that if you don't FULLY center the valve stems in the wheel bore, they will leak profusely. If they just touch or are slightly tightened, they will leak. What happens is that the stem side of the valve flexes into the valve causing the valve to leak. Spent a few bucks more and got a better product. I literally spent two hours replacing one and then the other and it was a very miserable experience. learn from my pain Stay away from this product.