Compromises are a fact of life. Want a promotion? Better suck up to your jerk of a boss. Or get him or her fired. You must get fit? There is no substitute for hours of pain and sweat. Except drugs. I want it all however, without compromise, and I was prepared to make the ultimate sacrifice of installing tire inserts up to 8 times to achieve this goal. Which sounds like I’ve been compromised.
I was seeking an insert solution without the usual weight penalty, with two different insert types. Tannus and CushCore approach the problem from different angles. CushCore, which is likely the best known insert at this point, is shaped like a teacup by cross section and it occupies the space closest to the rim and supports sidewalls. It is a tubeless solution that requires sealant and good rim sealing but the foam layer prevents flats by putting a cushion between the impact and your rim. As you can imagine, the system protects your rim in the process and can be run flat with remarkable capability.
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