How much tire sealant should I use? is a question that seems to have a million different answers depending on who you ask. Every manufacturer has a different recommended amount, and it seems like every forum post and YouTube video has a different expert claiming that their method is the only way to go. But lets get real, most of us are just guessing and hoping for the best. Im calling BS on the whole just use the recommended amount crowd. Whats the actual science behind tire sealant usage? Is it really just a matter of more is better or is there a sweet spot that were all missing? And what about the different types of sealant? Do they all require the same amount, or are there differences in viscosity and flow rate that affect the optimal amount? Im not looking for anecdotal evidence or this is what works for me responses. I want to see some actual data and testing to back up the claims. So, lets get to the bottom of this. How much tire sealant should I really be using, and why?