Offset help?

2013Zsport

So maybe +23 or +24? The front sounds good! And I think +30 is the highest I can go without hitting the brake calipers.

2013Zsport

According to the rimsNtires.com offset calculator I can do a 20x9 +33F with a 245/35/20 and a 20x11 +20 R with a 285/30/20. Front will extend 14mm and rear will extend 15mm. But the Nissansportz.com offset calculator says the front will extend 14mm the same as the rims and tires offset caculator but the rear says it will extend 23mm, so 8mm more than the other calculator did, doesn't make sense!

cooltoy

I can't recall the stock rim sizes. I have them at work. I'll check for you tomorrow.

2013Zsport

Thanks! I think the sport wheels are 19x9f +47 245/40/19 & 19x10r +30 275/35/19 at least 09-12 my13tires are the same maybe the offsets are different, I'll see if I can find anything on that.

cooltoy

Same numbers I have seen. Like I said - not sure about 2013-14.

Anyway here as some numbers with different tire options and offsets. I ran your desired offsets and getyuorwheels recommendations. The difference in tire numbers is obviously by how much the tire sticks out past the lip.

Fronts:

255/35/20x9 +30
Will stick out 22 mm farther then stock.
Wheel diameter 686 mm (679 mm stock)
245/35/20x9 +30
Will stick out 17 mm farther then stock.
Wheel diameter 680 mm (679 mm stock)

255/35/20x9 +20
Will stick out 32 mm farther then stock.
Wheel diameter 686 mm (679 mm stock)
245/35/20x9 +20
Will stick out 27 mm farther then stock.
Wheel diameter 680 mm (679 mm stock)

Rear:

285/30/20x11 +28
Will stick out 7 mm farther then stock.
Wheel diameter 680 mm (675 mm stock)
295/30/20x11 +28
Will stick out 12 mm farther then stock.
Wheel diameter 686 mm (679 mm stock)
305/30/20x11 +28
Will stick out 17 mm farther then stock.
Wheel diameter 692 mm (679 mm stock)

285/30/20x11 +15
Will stick out 20 mm farther then stock.
Wheel diameter 680 mm (675 mm stock)
295/30/20x11 +15
Will stick out 25 mm farther then stock.
Wheel diameter 686 mm (675 mm stock)
305/30/20x11 +15
Will stick out 30 mm farther then stock.
Wheel diameter 692 mm (675 mm stock)

285/30/20x11 +23
Will stick out 12 mm farther then stock.
Wheel diameter 680 mm (675 mm stock)
295/30/20x11 +23
Will stick out 17 mm farther then stock.
Wheel diameter 686 mm (675 mm stock)
305/30/20x11 +23
Will stick out 22 mm farther then stock.
Wheel diameter 692 mm (675 mm stock)

Hope this helps.

2013Zsport

it does help thanks! i just got off the phone with Forgestar and they recommended 20x9.5F +25 with a 255/35/20 and a 20x11R +20 with a 295 or 305 tire. I'm still going with a 285 though