20" Rims HELP

Hi, I was looking to put 20's on my 05 LS. But I dont want them to stick out past the fenders like i've seen on other LS's... Is that because its the wrong offset or something? Does anyone know the right offset for the 03-05 LS? I already have my car lowerd 1" and i also want to know if anyone has lowerd theirs and put 20's, and how the ride is (rough, alot of rubbing etc.). And if you have done this I would really appreciate it if you can send me some pictures to see what it would look like (if you do send pics make the subject "LS pics" or something like that so i dont delete it thinking its spam). Send them to [email protected]. Thanks alot guys any little bit of info would really help.

-Dan

Minimum offset is about 45mm. IIRC, factory offset is about 60mm.

LLSOC has several members running 20s on lowered cars. Nobody complains about the ride. One guy had to roll the inner lip of the fender, but he probably had the offset too low.