the 146 TI (and 145 cloverleaf) have shorter and stiffer springs, you can see that on my CD rom for Alfa parts. Lowering is 1 inch approx.
More is not advisable for the 2 litres as the sump clearance gets very narrow. wink
Following up on this tread what would be the max. practical lowering of a 146 1,6TS? Could you go 30mm or is that too much? I am not interested in changing wheel/suspension geometry too much. Lowered my old 33 1,7 16V Cloverleaf about 35mm, which made it very sensitive to steering input around the center position.
you best measure the distance between the bracket on the sump (meant to protect the exhaust, but is destructive for the sump when hit !!) and the street and at least!! have a 10 cm clearance !
Busted sumps are a plague amongst TS drivers (156,145,146 ). wink
p.s. take care with speed bumps a.s.o. !!
I removed the bracket to give me more