http://store.yahoo.com/rodi/prestirjacti.html

Could find any answers searching...a few questions:

Penzoil Fix-a-Flat can't be used on ZR rated tires. Prestone doesn't say anything...can it be used for ZR tires? I know that once a ZR tire is repaired, it's no longer ZR rated, but is that the reason?

Has anyone actually used this? I know that sealants like this are a pain for the tire guys, but supposedly the Prestone stuff is better. Anyone know for sure?

Thanks.

all "fix-a-flat" items are pretty much the same and if the tire is punctured the speed rating pretty much flies out of the window