The problem with the tire sealant is that it won't work if the puncture is too big. And it might mess up your wheels.

I keep the spare, a small air compressor, and a tire plug kit in my car. My plan is to use the tire plug kit first. If that doesn't work, then use the spare. I'd hate to have to drive around looking for the rare S02s.

 

I've had two flat rear tires so far and was present for another on someone else's S2000. None of them could have been fixed using tire sealant, patches, or CO2 cartridges. One of mine was a pinched sidewall from running over a rock in the road at the apex of a tight turn and one was a very sudden loss of pressure at freeway speeds where the sidewall was destroyed before I could get stopped. I was also with one other S2000 driver who managed to slide sideways into a tree, putting enough bark between the rim and tire that it would not hold air. In all of these cases it was much more convenient to put the spare on, even having to change two tires to do so, than wait for a tow truck to come. It can be especially aggravating when you're 40 miles from the nearest tow truck as two of those cases were.

I keep my spare with the car.

 

Ya, there is quit a bit more room if you remove the spare. I left mine out for a while after my spring/shock change and enjoyed the extra room. You have to leave the cover off from behind the spare and use the room where the spare would sit. I reinstalled the spare though in case of a flat. I have had one in my life (not in S) and it was not repairable be any means except a new tire.

 

[QUOTE]Originally posted by ejis
[B]Has anyone tried tire sealant?

 

Why then would BMW include this kit in several of their cars in lieu of a spare?
Do you plan on going 155mph on your repaired tire?
The normal kits (tire sealant) are usually only suggested for 15-16" tires. Just carry two or more cans for the big boys.
FWIW, the kit above worked fine for me with my MR2-Spyder. Its effectiveness depends on the degree of "disaster" you have with your faulty tire. As for the sealant and its inherent mess, I'm not concerned about the tire at that point, only getting to a place safely to put a new one on. Losing the spare and the tool kit saves 30-lbs and provides more room. Another of life's reminders that there's no such thing as a free lunch. Cell phone and AAA. Works for me.