I did mate... but suspension shop know tyres/wheels and then their own brand of coilovers more...didn't seem to know much in terms of spring rates for these ones.

Its just a general query in that post, as in if one's racing springs were 10/8 and soft street were 6/5, then would 8/7 be a good middle ground or 8/6... anyway I don't think anyone would have the right answer for me, I'm just going to have to try it.

Edit: AU distributor/supplier said go with 8/7 as it keeps a similar f/r spring ratio as the stock 6/5 but that's just 1kg off the rate of the racing version rears....might go 8/6, probably be a bit easier to live with.

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06 STi: 337hp @23psi on E85...
06 STi: 309hp @22psi on 98ron...