20 Inch Wheels - Help Details

[scriber]

I am looking to put 20" Niche F18's on my 1998 GS. I am more concerned with the offset as I am looking for a deep effect on the wheel. I do realize I may have to roll the fenders. Does anyone know about offset and complete arangement? This is what I am looking to do below.

WHEELS

REAR: 20x10 with an 18mm offset in the rear (other offset available is 40mm

FRONT: 20x8.5 with a 20mm or 34 offset in the front. (other offsets available is 45mm)

I am also looking at doing a slight lowering about 1" in the front and back.

TIRES

REAR: 275/30-20

FRONT: 245/30/20

[Neo]

I am looking to put 20" Niche F18's on my 1998 GS. I am more concerned with the offset as I am looking for a deep effect on the wheel. I do realize I may have to roll the fenders. Does anyone know about offset and complete arangement? This is what I am looking to do below.

WHEELS

REAR: 20x10 with an 18mm offset in the rear (other offset available is 40mm

FRONT: 20x8.5 with a 20mm or 34 offset in the front. (other offsets available is 45mm)

I am also looking at doing a slight lowering about 1" in the front and back.

TIRES

REAR: 275/30-20

FRONT: 245/30/20

←

Even with fender rolling/shaving, those offsets won't work. You MIGHT be able to do it if you run more neg camber and smaller tires.

With those choices, I'd go with

WHEELS

REAR: 20x10 +40mm (you will need to roll or shave about 2-3mm off the lip)

FRONT: 20x8.5 +34mm (you will need to roll the fender)

TIRES

REAR: 275/30-20

FRONT: 245/35-20 (You need to do this to get the tire diameters the same)

[scriber]

Why wont a +18 offset in the rear and a +20 in the front not work? I would like to go as aggressive as I can. Is this offset just out of the question for my car?