RE: john_p's BMW M3
Discussion
It's a liquid that's injected into the tyre through the valve. The theory is it gets pressed against the inside of the tyre by centrifugal force.
If you get a puncture, the stuff fills the hole and hardens, allowing you to keep driving.
Impressive demo where the guy hammered nails into the tyre and drove a van over some spikes.. no loss of pressure. (Normal tyres!)
Good in theory, three problems
a) it induced a nasty vibration in the steering at about 70-90mph, as if they were out of balance
b) you change tyres so often in the M3 it could get expensive
c) worries about a puncture occuring, getting sealed but never noticing it, leaving a weak spot in the tyre
I'm not sure whether the large alloys and very low profile tyres contributed to (a) but to be honest I was glad to get the tyres changed and the stuff removed! Never got any flat tyres tho
Might work better on a car with sensible tyres?
If you get a puncture, the stuff fills the hole and hardens, allowing you to keep driving.
Impressive demo where the guy hammered nails into the tyre and drove a van over some spikes.. no loss of pressure. (Normal tyres!)
Good in theory, three problems
a) it induced a nasty vibration in the steering at about 70-90mph, as if they were out of balance
b) you change tyres so often in the M3 it could get expensive
c) worries about a puncture occuring, getting sealed but never noticing it, leaving a weak spot in the tyre
I'm not sure whether the large alloys and very low profile tyres contributed to (a) but to be honest I was glad to get the tyres changed and the stuff removed! Never got any flat tyres tho
Might work better on a car with sensible tyres?
B 7 VP said:
Ultraseal do NOT reccomend any tyre under 40 profile to be treated , due to the extra reinforcement ribs, which sub 40 tyres have.Tyres need to be balanced Prior to application, and any rim damage will affect the Balance.My refurbished rims, New Falkens balanced, = perfect Ride and a No vibro steering ZMCoupe.
Maybe its a Driver Prob ???
lol you work for Ultraseal I assume
a) tyres are 40 section front, 35 rear - the guy installing it didn't mention any warning about 40 profile, if he had I would have not had it done (and if you read my post you'd see I mentioned I suspected the low profile causing a problem)
b) tyres had just been balanced, car brand new
c) rims undamaged
I'm happy it all worked out for you .. but make sure you keep checking those tyres!
Hi Guys.
Is this the same stuff that the American military use? (Or at least that's what one the manufacturers reckon).
If so the thing that needs bearing in mind in addition to what has already been said is that most military vehicles have huge balloon tyres. (Never seen a "Hum 3" carrying troops around Iraq on the TV)And never travel over 60mph and the rolling radius of their wheels is a lot greater than sports car (Pushing the vibration higher up the speed range).
Rant over ;-)
Is this the same stuff that the American military use? (Or at least that's what one the manufacturers reckon).
If so the thing that needs bearing in mind in addition to what has already been said is that most military vehicles have huge balloon tyres. (Never seen a "Hum 3" carrying troops around Iraq on the TV)And never travel over 60mph and the rolling radius of their wheels is a lot greater than sports car (Pushing the vibration higher up the speed range).
Rant over ;-)
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