The old springs had definitely sagged, which is why I fitted new springs.
On the offside the dimension from wheel centre to wheel arch is 387mm, the nearside is 400mm.
To me the car is sitting level so I think it is correct, however confirmation from Clive would be good.
That's about right.......380-390 is 'average' std rear height with new std springs.
: I spent a bit of time measuring a few of my V6 GTVs(I've done this many times before but not written it down), some with new springs/shocks fitted(genuine Alfa & Suplex).
The car with genuine rears sits the highest, approx 385mm, another with new Suplex(fitted 1 year ago but done less miles than the genuine ones) at approx 375mm & 4 others on presumably used genuine between 370-375mm. Rule of thumb, IMO, is anything 370+ is still ok, any less you should probably start considering refreshing the suspension. The one on Eibachs -20mm lowering springs measured 360mm.
FYI, std fronts measure approx 10mm less...so 370ish new.....360ish still ok.
Also checked the Suplex springs against the last remaining genuine new Alfa rear spring I have........they're near identical, in fact I think Suplex might now manufacture these for Alfa? I seem to remember that they do supply other manufacturers.
From memory it was the KYB V6 rears which were shorter with a lesser number of coils, similar to the TS rear springs, not the Suplex.....which I probably hadn't even opened the boxes as I wasn't personally fitting them.
Suplex fronts are also the same as genuine Alfa, height & number of coils.