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#11 Re: stretchin tyres..... japanese style
andy-roo Posted on: 2009/5/12 12:52
thats now on my to do list now. just to try it for myself


#12 Re: stretchin tyres..... japanese style
levey Posted on: 2009/5/12 13:04
Try to avoid the curry method, lots of clean up & it stinks.


#13 Re: stretchin tyres..... japanese style
datsunsunny Posted on: 2009/5/12 21:58
what is the point of having stretched tyres?? does it help in any way?????????????


#14 Re: stretchin tyres..... japanese style
datto1000wagon Posted on: 2009/5/13 0:08
helps keep the car legal and you dont really want to flare your gaurds but still want to run those 7" oldskool kool wheels
in other words it helps to get the tread withing the gaurds so when the cop pulls you over he cant defect you


#15 Re: stretchin tyres..... japanese style
Booster Posted on: 2009/5/13 4:00
you do it in drifting to reduce sidewall flex, makes alot of differance when switching direction, i think you could still get defected for improper use of tyres??? if the cop has a brain


#16 Re: stretchin tyres..... japanese style
Posted on: 2009/5/13 5:47
plus you also run the risk at high speed of the bead unseating off the rim... have seen it first hand and wouldnt recomend it... as if rev would use the deoderant method, unless he stole his mrs impulse... or his.


#17 Re: stretchin tyres..... japanese style
jmac Posted on: 2009/5/13 11:23
what unfamilia said times a billion!!! Having the outer sidewalls angled out like that means that the large flat surface that normally secures the tyres out beyond the bead won't work - If the tyre loses pressure, heck even on a massively hard corner with reasonable pressure, those tyres are just _begging_ to pop off the bead. To say nothing of the fact the sidewall and radial 'belts' are designed as a certain shape and distorting them like that will fatigue/stress them. AND the tread contact patch/downforce/spread will not be even across it's width.

This is without a doubt one of the most idiotic car related things I've seen on the internet. God help _anyone_ who has to share the roads with someone who does this.

To be fair, though, the ether 'deflagration' to pop the tyre onto the rim - believe it or not, that's actually not massively dangerous and is a reasonable way to seat a tyre on the beads if you are stranded in the outback or something (you'd have to inflate the tyre afterward as the rapid expansion of gas from combustion will of course cool/shrink/taper off, and it'll need more air in there to get it to desired pressure. This actually works out ok, because when far from civilisation, you might have a small pump on board which will inflate tyres, but has nowhere near the airflow to seat the tyre past the beads.


#18 Re: stretchin tyres..... japanese style
perthute Posted on: 2009/5/13 13:51
lol evey drift car i know n mine had neva had a blow out on stretch tyres . n thats 140kph at the front wheels with the rears doing a lot more with crazy sideward force


#19 Re: stretchin tyres..... japanese style
jmac Posted on: 2009/5/13 14:52
actually, by it's very nature, drifting involves a loss of traction, so less lateral stress on the beads. Obviously it's a matter of relative degree - the further you stretch them, the more dangerous it gets. Relatively speaking, and I don't want to get into a huge physics post, but relative to circuit racers, the front tyres don't have to do nearly as much laterally.. Yes drifters are getting decent lateral speeds happening, but the angle of attack (for want of a better term) and experienced slip angles of the fronts are actually relatively low stress to the tyres. I'm trying to put this in terms of the forces involved, it is _not_ in any way a sly snipe at drifting. I'm not trying to be a smart alec by saying the cornering forces aren't as high, and in no way is it any marker of driving skill, it's just the nature of the way the car is (of necessity) put around a circuit for each totally different competition scenario.

If you put 5 bullets into a revolver and place the gun to your head and pull the trigger and it doesn't fire, is the proof it's safe to keep doing so?? It's about the same thing really. There's a reason tyre manufacturers nominate the acceptable wheel widths for any given tyre.

I'm curious - have any tyre manufacturers stepped up and developed a tyre specifically for drift competition? I'm thinking something with more sidewall rigidity (for a consistent footprint/behaviour when traction limits are exceeded, whereas a circuit racer wan'ts something a little softer, to allow weight transfer to maximise downforce and by extension lateral grip) and possibly tread too (which would probably actually mean the use of slicks as any 'tread' ultimately means 'blocks' of tread, which get torn up and produce an inconsistent footprint when hit hard - i.e. burnouts or drifting.). Any tyre makers actually gotten on board? There'd have to be some profit in it, drifting is hardly a fringe activity, it's got considerable popularity/participation.


#20 Re: stretchin tyres..... japanese style
datsunsunny Posted on: 2009/5/13 18:50
so the conclution is that it is better to use a low profile tyre. safer and better performance



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