Police stinger and run flat tyres?

[Huntsman]

So what happens when the Police try to stop a tearaway car wearing run flat boots using stinger?

Does the stinger inflict sufficient damage that the boots fail?

Perhaps it just takes longer?

[kambites]

Run-flats work by having stiff enough side-walls to support the vehicle weight, I don't see how a stinger would be any different to any other puncture. However, flat run-flats are only rated for about 40mph (maybe 50 these days, not sure); if you tried running away from the police on them, specifically trying to put any cornering force through them, I suspect they'd fall to bits relatively quickly.

[gcpeters]

tiff didnt seem to have any problems at 90+!

http://www.youtube.com/watch?v=mxHwrMh76tE

[djohnson]

kambites said:

Run-flats work by having stiff enough side-walls to support the vehicle weight, I don't see how a stinger would be any different to any other puncture. However, flat run-flats are only rated for about 40mph (maybe 50 these days, not sure); if you tried running away from the police on them, specifically trying to put any cornering force through them, I suspect they'd fall to bits relatively quickly.

They may only be rated to 50 mph however (in error) we ran the wife's X5 quite a few miles at speeds well over 50mph on a deflated run-flat with little consequence and little obvious impact on the cornering.

[kambites]

Interesting, I assumed the side-wall would just bend over if you tried to put serious cornering loads through them.

[djohnson]

kambites said:

Interesting, I assumed the side-wall would just bend over if you tried to put serious cornering loads through them.

I guess so. We were on holiday with kids etc so wasn't really pressing on. I could kind of tell that something wasn't totally right with the way the car was driving but it was a minor difference.

[IainZ]

djohnson said:

I guess so. We were on holiday with kids etc so wasn't really pressing on. I could kind of tell that something wasn't totally right with the way the car was driving but it was a minor difference.

Did the tyre pressure monitor not light up ?

[RobM77]

djohnson said:

kambites said:

Interesting, I assumed the side-wall would just bend over if you tried to put serious cornering loads through them.

I guess so. We were on holiday with kids etc so wasn't really pressing on. I could kind of tell that something wasn't totally right with the way the car was driving but it was a minor difference.

I've had a flat tyre with run flats (rear left) and yes, the back end squirmed around in a rather unnerving way. I picked up the puncture on the motorway, and at 70mph in a straight line it wasn't obvious that I had a puncture, and I actually didn't believe the iDrive when it told me that I did. Nevertheless, the next junction was only a mile away, so I came off there to check, but as soon as I turned the steering wheel the back end felt awful. The cornering force was fairly mild. I run 205/55/16 I think.

[jesta1865]

Huntsman said:

So what happens when the Police try to stop a tearaway car wearing run flat boots using stinger?

Does the stinger inflict sufficient damage that the boots fail?

Perhaps it just takes longer?

i was under the impression that the latest ones are designed to wrap themselves round the tyre / wheel and jam it specifically as you may have run flats on.

[StottyZr]

RobM77 said:

I run 205/55/16 I think.

I think there would be a big difference in feel between this size and a 245/40/18 at a guess. A large profile would be much weaker I would expect.

[maffski]

According to Magnum Spike! (tm) a stinger won't stop run flats. But Magnum Spike! (tm) with its high density spikes will rip the sidewalls causing the tyre to fail.

[seagrey]

jesta1865 said:

i was under the impression that the latest ones are designed to wrap themselves round the tyre / wheel and jam it specifically as you may have run flats on.

You mean X-net,no getting through that,run flats or not!

[uk_vette]

So runflats may or maynot stll keep you mobile, but at a reduced speed.

I would like to throw another tyre into the equasion.
What if it wasa substantial 4x4, with big, off road type reinforced tyres.
How would the stinger be able to penetrate the shear strength of the tyre?

vette

[RobM77]

StottyZr said:

RobM77 said:

I run 205/55/16 I think.

I think there would be a big difference in feel between this size and a 245/40/18 at a guess. A large profile would be much weaker I would expect.

That's why I mentioned it. The squirming sensation I described was almost certainly the contact patch moving relative to the wheel with a lot of sidewall flex. On the plus side, in normal driving the big sidewalls and modest wheel size give an excellent ride/handling compromise - you lose a bit of turn in crispness and response compared to smaller sidewalls, but the positives outweigh that for the sort of driving that I do in the car.

[hardcorehobbit]

The Fifth Gear video above proclaims the future of a type of net that when you drive over it, wraps itself around the wheels, stopping them instantly.

I can see why it never caught on, it's not exactly a controlled stop with the front wheels locked and skidding.

[jesta1865]

uk_vette said:

So runflats may or maynot stll keep you mobile, but at a reduced speed.

I would like to throw another tyre into the equasion.
What if it wasa substantial 4x4, with big, off road type reinforced tyres.
How would the stinger be able to penetrate the shear strength of the tyre?

vette

i imagine it would have to be a full on off road tyre to beat one or at least have a chance of beating one. the spikes look fairly meaty and long from what i have seen on telly.

i doubt the road biased tyres on my discovery (only for the mot, promise) would survive, the coopers i am thinking about may at least get me down the road, i think you would need some insa extreme types to annoy the BiB as they may have to chase you for a while.

mind if you have stolen a range rover you can use it without wheels
http://www.youtube.com/watch?v=mNFpRRYO65A&ore...

[PhillipM]

Depends how heavy the offroader was and how wide the tyres are I suspect, the 235/70's on the back of the buggy it can race on even with no air in 'em.

[RobM77]

jesta1865 said:

uk_vette said:

So runflats may or maynot stll keep you mobile, but at a reduced speed.

I would like to throw another tyre into the equasion.
What if it wasa substantial 4x4, with big, off road type reinforced tyres.
How would the stinger be able to penetrate the shear strength of the tyre?

vette

i imagine it would have to be a full on off road tyre to beat one or at least have a chance of beating one. the spikes look fairly meaty and long from what i have seen on telly.

i doubt the road biased tyres on my discovery (only for the mot, promise) would survive, the coopers i am thinking about may at least get me down the road, i think you would need some insa extreme types to annoy the BiB as they may have to chase you for a while.

mind if you have stolen a range rover you can use it without wheels
http://www.youtube.com/watch?v=mNFpRRYO65A&ore...

To be fair, if you've stolen an off roader, I doubt the police would have much trouble catching you in the first place and therefore no need to use a stinger Either that or you'd be off across the fields with a helicopter chasing you.

[J4CKO]

maffski said:

According to Magnum Spike! (tm) a stinger won't stop run flats. But Magnum Spike! (tm) with its high density spikes will rip the sidewalls causing the tyre to fail.

Dont like the sound of that, will stick with the Dark Chocolate variety.

[seagrey]

http://www.youtube.com/watch?v=n8FNR8BryR0
These do the trick regardless of tyre type or size.