My contribution to this thread.
If you really think tyre stretching is a good thing then
You're a fucking idiot.
It also looks bad.
Enjoy!
Also found this linked on another forum
And perhaps one should contact their insurance provider and ask them if a claim would still be valid when they find stretched tyres after you prang your car?
http://www.aus300zx.com/forum/showthread.php?t=290328