Polyurethane bushing squeak

Rat Bastid,
This is what we get from you. Every time. Every time you lose an argument or get shown to be a fool, you get nasty.
Back to the topic, rubber bushes are best for a street driven car. Yes, the rubber has a finite life & needs replacement. So does engine oil & piston rings when they wear out; does not mean they are not the best product for the job.
Tyres IS the correct spelling where I come from, & in many other English speaking countries. Carry on with the brain surgery....