thought about it. never happened, hope it never does.. btw  i do need a new front. thanks for the reminder.

This whole topic has always given me pause to consider having mine made into tubeless.  In my experience (and this was luckily with a '59 F-100 pickup instead of a bike), when a tube goes, it usually goes FAST - like a blowout; not like tubeless tires do.  I've read that this is the norm a high percentage of the time but don't know for sure if it's true.  That said, I wonder how much benefit any of these sorts of products offer for tubes.

Well, tubeless would seem to be the way to go, but wouldn't you have to purchase spokeless rims to go that route?

Front flats= VERY scary and unknown stuff to me. As of the many tire problems I've had on both road and dirt riding, all have been on the rear tire! And I have had blowouts; both slow and fast deflations; and total separation of the tire from the rear rim. Since some of those have caused me some very exciting moments, I'd just as soon never know the hazard of a catastrophic front tire failure!

I'm glad you brought this up; because I think I'll seriously look into some of the "run flat" stuff now. It may not be a 100% answer, but increasing your odds by any percentage is better than doing nothing.

Have had rear flats, no fronts. I think mostly because I'll run a rear tyre until thread is showing, but as soon as the front has age, or average wear, I change it. Depending if it is a leaker, or an outrite blow out, the danger differs. Typically a tube goes flat quicker because the punture can open up since the tube is not fixed to the tyre, and the tube material stretches easy. A tubless tyre has the tube material made into the carcas, and when puntured, the material does'nt stretch and let the hole become larger. Also a tube type tyre/rim lets air leak from the punture and the inside of the rim, which allows a quicker realse. When anyone has a tube type tyre replaced, it is worth the money, especially on the front to have the tube and rim strip replaced also. Most ppl ingnore the rim strip, and spokes can very easily punture the inside to the tube. The sealant products out there most always work better on tubeless tyres. I use sealant on mountain bike tyres, and useually, I have a flat, then after it gets reinflated it'll hold air well, weird, but thats how it happens. I've never run the stuff in motorcycle tyres, so I could'nt say how it works there.  I also would think that a liquid in the tyre would cause an unbalance at speed.

A lot of dirt bike racers today(GNCC,hare scramble,enduro,cross country,Dakar,etc.) don't even have air in the tires. They use a solid foam rubber tube, because that is the only way to prevent a flat in those conditions. If you ride/drive anything that has inflatable tires, best bet is to know how to repair them on the side of the road. Its a matter of when and not if. "Be prepared"