.... just close the horrible fender gap on a 40 profile tyre, with a 215 width as I'm also going to space it out with 10 in front and 15mm at the rear.
I don't know what works on these cars yet so any one with experience let me know please.
Returned teledials wheels in special cup paint.
40 profile tyres
45mm lower all round or one finger gap between arch and tyre...
Speedbumps and harshness of ride is least of worry...ultimate goal is low.
If you're trying to fill the wheel arch why go for 40 profiles? As they are of a smaller overall diameter, especially 205s, than the correct 225/45s they will counter the effect of lowering to fill the arch. Admittedly with the smaller tyre you might get away with 15mm rear spacers, I doubt you would with 225/45s on a V6, a TS yes as they've a narrower rear track. 10mm hubcentrics are very rare & weak, you need at least 12mm for strength.
The Cup racers only ran lowering springs, unsure of the exact amount but I doubt it was more than -30mm. I've got the picture of the Cup racer that you posted above & if you look carefully the front wheel looks smaller diameter than the rear, possibly an optical illusion or did they experiment running 16" Teles on the front & 17s on the rear? Most of my Cup racer pictures show them on the std 16" smooth 5 hole wheels front & rear.....not Teles. The Cup racer picture is cornering so the suspension is compressed.
If you go 45mm drop it will drive like a piece of cr@p, 30mm is very hard. I had FK coilovers which I lowered to near the max, which actually softens the springing, but it was so low the non std rear exhaust bottomed in the centre on anything other than 'flat' roads. I didn't bother to measure the drop but it was probably about 40mm(picture with silver Teles). I then fitted std shocks with -30mm lowering springs(picture with black Teles).
You can't get the look without destroying the ride but at least with coilovers you could lower it to show & then adjust it back up to a 'sensible' height to drive home.
30mm drop looks good enough, IMO, although to get some comfort back I then fitted Eibachs approx 20mm drop + 18 on 225/40s.....these are spaced to the max.