I've experienced anywhere from 2-5 lbs.psi loss per day on my tubed (Continental tubes and tires) 700x23's and 2-20 lbs.psi per day on my 700x38's tubeless (using Stan's sealant, not their race styled-styled sealant). In the tubes I pump to 115 lbs.psi with the tubeless usually pumped to 60 lbspsi. The
The higher figure on the tubeless is when first placing a new tire with new tape. It takes time before the sealant works its way into all the micro-seals (is my guess).