Polybushes - technical knowledge anyone?

[Prey]

So I want to polybush the beemer - superflex sell a 80sha and 90sha hardness set, apparently from what they and others say 75-80sha is the 'standard option' and 90 is sport - but how hard is 90 compared to 80?

[dhdev (Oli)]

It's a 12.5% increase in shore hardness

[Andy]

Imagine 80 as a semi-on and 90 as a full on rock-on lol

[mk1nova_rich]

lol

[Prey]

Good example lol. I want to go for sport ones.....