Offset help?

2013Zsport · 02-23-2014, 04:08 PM

I'm looking to buy forgestar f14s and don't want a too aggressive fitment. I would like to get 20x9 or 20x9.5 front and 20x11 R with a 255/35/20f and 285/30/20r. So far I'm going to keep the stock height suspension and camber. I want offsets that are close without rubbing and not quite flush, what offsets should I go with? Please help!

cooltoy · 02-23-2014, 04:19 PM

Talk to getyourwheels. They will set you up.

http://www.the370z.com/wheels-tires/...p-concave.html

Use this to calculate offsets.

Custom rims, wheel tire packages for your ride - RIMSnTIRES.com

This is a good read.

Wheel specs without having to use spacers

2013Zsport · 02-23-2014, 04:48 PM

I've used all of these before just wondering how accurate this calculator is?

2013Zsport · 02-23-2014, 04:50 PM

I was thinking +30f and +28r

cooltoy · 02-23-2014, 04:58 PM

Quote:

Originally Posted by 2013Zsport

I've used all of these before just wondering how accurate this calculator is?

I think its accurate. Just measure your stock rims and how far they are from the edge of the fender (~20 mm I think) and then use the calculator to give you the offset that gets you close to the rim.

2013Zsport · 02-23-2014, 05:01 PM

Getyourwheels said +20f +15r which is flush but is to aggressive for what I want.

cooltoy · 02-23-2014, 05:21 PM

+30 front will be sunken in a bit (3 mm), but you can use a slightly wider tire to to get it more flush.

The + 28 rear will be slightly more sunk in then the front (8mm), so a small spacer might be needed.

cooltoy · 02-23-2014, 05:24 PM

Quote:

Originally Posted by 2013Zsport

Getyourwheels said +20f +15r which is flush but is to aggressive for what I want.

Those will stick slightly past (2-5 mm). The rear wil look better as it wil stick out less. You might have to stretch the tires a bit.

cooltoy · 02-23-2014, 05:28 PM

Tires you are looking at are pretty wide for a conservative set up. They wil definitely stick out a touch even with your desired offsets.

2013Zsport · 02-23-2014, 05:56 PM

Just went out and measured I have 15mm up front and 19mm in the rear.

2013Zsport · 02-23-2014, 05:58 PM

Quote:

Originally Posted by cooltoy

Tires you are looking at are pretty wide for a conservative set up. They wil definitely stick out a touch even with your desired offsets.

What do you think I should run for tires? Drop it down a size on F & B?

2013Zsport · 02-23-2014, 06:07 PM

Quote:

Originally Posted by cooltoy

+30 front will be sunken in a bit (3 mm), but you can use a slightly wider tire to to get it more flush.

The + 28 rear will be slightly more sunk in then the front (8mm), so a small spacer might be needed.

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 · 02-23-2014, 06:44 PM

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 · 02-23-2014, 07:19 PM

The nice thing about rimsNtires.com is that it shows how far the tires will stick out so you can play around with the tire width. You also got to make sure that the overall diameters are not too different rear to front.

cooltoy · 02-23-2014, 07:21 PM

Quote:

Originally Posted by 2013Zsport

Just went out and measured I have 15mm up front and 19mm in the rear.

Hmmm. That's different from what I measured on pre 2013 models, maybe they changed something on the front. Didi you lay a thin flat object across the diameter of the wheel and measured from that?

02-23-2014, 04:08 PM	#1 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	Offset help? I'm looking to buy forgestar f14s and don't want a too aggressive fitment. I would like to get 20x9 or 20x9.5 front and 20x11 R with a 255/35/20f and 285/30/20r. So far I'm going to keep the stock height suspension and camber. I want offsets that are close without rubbing and not quite flush, what offsets should I go with? Please help!

02-23-2014, 04:19 PM	#2 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,004 Drives: 14 PW 370Z S/T MT Rep Power: 243724	Talk to getyourwheels. They will set you up. http://www.the370z.com/wheels-tires/...p-concave.html Use this to calculate offsets. Custom rims, wheel tire packages for your ride - RIMSnTIRES.com This is a good read. Wheel specs without having to use spacers Waiz and Haboob like this.

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02-23-2014, 04:48 PM	#3 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	I've used all of these before just wondering how accurate this calculator is?

02-23-2014, 04:50 PM	#4 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	I was thinking +30f and +28r

02-23-2014, 05:01 PM	#6 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	Getyourwheels said +20f +15r which is flush but is to aggressive for what I want.

02-23-2014, 05:21 PM	#7 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,004 Drives: 14 PW 370Z S/T MT Rep Power: 243724	+30 front will be sunken in a bit (3 mm), but you can use a slightly wider tire to to get it more flush. The + 28 rear will be slightly more sunk in then the front (8mm), so a small spacer might be needed.

02-23-2014, 05:28 PM	#9 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,004 Drives: 14 PW 370Z S/T MT Rep Power: 243724	Tires you are looking at are pretty wide for a conservative set up. They wil definitely stick out a touch even with your desired offsets.

02-23-2014, 05:56 PM	#10 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	Just went out and measured I have 15mm up front and 19mm in the rear.

02-23-2014, 06:44 PM	#13 (permalink)
2013Zsport Base Member Join Date: Oct 2012 Location: Queensbury NY Posts: 58 Drives: 2013 370z sports pkg Rep Power: 13	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!

02-23-2014, 07:19 PM	#14 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,004 Drives: 14 PW 370Z S/T MT Rep Power: 243724	The nice thing about rimsNtires.com is that it shows how far the tires will stick out so you can play around with the tire width. You also got to make sure that the overall diameters are not too different rear to front.