18" wheels, sport brakes what offset?

Zoomzoom22 · 01-07-2013, 11:15 AM

I am looking to pickup some 18" wheels for track/racing. It is not clear to me what offset is needed on 18" wheels to clear the sport package brakes. 19" wheels are not an option for me (tires are 18"). I need to pickup several sets of wheels 18x9 front and 18x10 rear but obviously don't want to be wrong.

Can anyone let me know what is needed in terms of front and rear offset? Tire rule limits front to 275/30 max and rear 275/35. I don't want to run spacers if I don't have to. The threads here I have read through and can't find a clear enough answer. The Enkei RPF as an example, not clear what offset clears the sport brakes..

chrischhorn · 01-07-2013, 12:21 PM

its depends on what wheels also. the rpf1's +35 dont clear sport brakes but the TC105n's i have with a +35 offset do. the face design has a lot to do with it. best thing to do is choose a wheel then ask some of our wheel vendors on here for more info!

Zoomzoom22 · 01-07-2013, 12:34 PM

Quote:

Originally Posted by chrischhorn

its depends on what wheels also. the rpf1's +35 dont clear sport brakes but the TC105n's i have with a +35 offset do. the face design has a lot to do with it. best thing to do is choose a wheel then ask some of our wheel vendors on here for more info!

No TC105n's in 18x9 or 18x10 (my limit size) for SCCA

madeinjapan · 07-13-2016, 08:48 AM

Quote:

Originally Posted by chrischhorn

its depends on what wheels also. the rpf1's +35 dont clear sport brakes but the TC105n's i have with a +35 offset do. the face design has a lot to do with it. best thing to do is choose a wheel then ask some of our wheel vendors on here for more info!

tell me about it

i just bought +25s and they dont clear

daisuke149 · 01-07-2013, 04:10 PM

its not as simple as offset. has to do with design too. So theres no way to 100% answer what offset will work.

like the person above, pick some wheels, and ask one of the wheel vendors. Or just call ravspec and tell them what you need and they can get it to you.

mattjk · 01-07-2013, 04:16 PM

stock 18s fit the stock akebono big brakes, so if you can get a set of those, you can measure the pad to disc distance.

offset has nothing to do with it.

you need the "A" measurement:

gomer_110 · 01-07-2013, 04:28 PM

Just get these and call it a day:

Volk TE37SL
Front: 18 x 10 +30
Rear: 18 x 11 +18

I'm running these on my Nismo with NO clearance problems.

IMG_0005.JPG.jpg

Zoomzoom22 · 01-07-2013, 05:16 PM

Quote:

Originally Posted by gomer_110

Just get these and call it a day:

Volk TE37SL
Front: 18 x 10 +30
Rear: 18 x 11 +18

I'm running these on my Nismo with NO clearance problems.

Attachment 60710

I posted this already, limited to 18x9 front and 18 x 10 rear to meet the racing rules

So find me a Volk 18 x 9 and 18 x 10 and I am in business

Or Enkei, they are cheap. This will be my 6th race car and never been this hard to figure out, it is funneh.

gomer_110 · 01-07-2013, 05:20 PM

Quote:

Originally Posted by Zoomzoom22

I posted this already, limited to 18x9 front and 18 x 10 rear to meet the racing rules

So find me a Volk 18 x 9 and 18 x 10 and I am in business

Or Enkei, they are cheap. This will be my 6th race car and never been this hard to figure out, it is funneh.

saw the "or" and figured either one was fine.

clintfocus · 01-07-2013, 06:20 PM

ZoomZoom, i posted in your thread in the track forum

Mike · 01-07-2013, 06:26 PM

do they have to be 9 and 10, or is that the widest? Stock 18s might be the best answer, possibly even widening them to the width you want. I widened a set of 350z track wheels for my setup to 9.5" and I run 295/40 Hoosiers on them.

Zoomzoom22 · 01-07-2013, 09:40 PM

Quote:

Originally Posted by Mike

do they have to be 9 and 10, or is that the widest? Stock 18s might be the best answer, possibly even widening them to the width you want. I widened a set of 350z track wheels for my setup to 9.5" and I run 295/40 Hoosiers on them.

Fronts 9" rear 10"

Stock wheels too heavy. Tire limit is 275 max also.

Obviously want to run the widest I can, but guess I could run 18 x 8.5 front if it helped and 18 x 9.5 rear if I had to (or 10 rear).

Trying to avoid spacers unless I want them for track. Also rule that limits tires sticking out wider than body work although i am not as worried about that.

chrischhorn · 01-07-2013, 06:45 PM

SA-55ms are always and option too. but enkeis you will for sure hav to run spacers to clear.

Zoomzoom22 · 01-07-2013, 09:46 PM

Quote:

Originally Posted by chrischhorn

SA-55ms are always and option too. but enkeis you will for sure hav to run spacers to clear.

What offset on these? I see the 18 x 9 +20 and they also have 18 x 9 +36
The rears are 18 x 10 +18 and +36 which I assume both would fit the rear?

These wheels look nice enough, need to check weights now. If I can save 4-5 lbs per wheel I will likely go Volks to get the weight saving.

guru · 01-07-2013, 09:57 PM

is 9.5 an option for up front?

01-07-2013, 11:15 AM	#1 (permalink)
Zoomzoom22 Base Member Join Date: Dec 2012 Location: Atlanta Posts: 42 Drives: Bmw 750Li M Rep Power: 13	18" wheels, sport brakes what offset? I am looking to pickup some 18" wheels for track/racing. It is not clear to me what offset is needed on 18" wheels to clear the sport package brakes. 19" wheels are not an option for me (tires are 18"). I need to pickup several sets of wheels 18x9 front and 18x10 rear but obviously don't want to be wrong. Can anyone let me know what is needed in terms of front and rear offset? Tire rule limits front to 275/30 max and rear 275/35. I don't want to run spacers if I don't have to. The threads here I have read through and can't find a clear enough answer. The Enkei RPF as an example, not clear what offset clears the sport brakes.. Last edited by Zoomzoom22; 01-07-2013 at 11:48 AM.

01-07-2013, 12:21 PM	#2 (permalink)
chrischhorn A True Z Fanatic Join Date: Jan 2012 Location: Mililani, HI Posts: 1,566 Drives: 2014 Juke Nismo RS Rep Power: 17	its depends on what wheels also. the rpf1's +35 dont clear sport brakes but the TC105n's i have with a +35 offset do. the face design has a lot to do with it. best thing to do is choose a wheel then ask some of our wheel vendors on here for more info! __________________ R.I.P. 8/01/13 1SlowZ One day I'll have another....

01-07-2013, 04:28 PM	#7 (permalink)
gomer_110 A True Z Fanatic Join Date: Aug 2011 Location: Perrysburg, OH Posts: 17,992 Drives: '11 Nismo #528 GM Rep Power: 36941	Just get these and call it a day: Volk TE37SL Front: 18 x 10 +30 Rear: 18 x 11 +18 I'm running these on my Nismo with NO clearance problems. IMG_0005.JPG.jpg __________________ '11 370Z Nismo #528 Fast Intentions \| Stillen \| Motordyne \| Uprev \| CSF \| Zspeed \| Z1 Motorsports \| AST \| Swift \| SPC \| SPL \| Whiteline \| Hotchkis \| Bride \| Schroth \| Robispec \| Cusco \| Nismo \| Volk \| Forgestar \| Hoosier \| RJM '17 Titan Bone Stock

01-07-2013, 06:26 PM	#11 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2186	do they have to be 9 and 10, or is that the widest? Stock 18s might be the best answer, possibly even widening them to the width you want. I widened a set of 350z track wheels for my setup to 9.5" and I run 295/40 Hoosiers on them. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

01-07-2013, 06:45 PM	#13 (permalink)
chrischhorn A True Z Fanatic Join Date: Jan 2012 Location: Mililani, HI Posts: 1,566 Drives: 2014 Juke Nismo RS Rep Power: 17	SA-55ms are always and option too. but enkeis you will for sure hav to run spacers to clear. __________________ R.I.P. 8/01/13 1SlowZ One day I'll have another....

01-07-2013, 04:10 PM	#5 (permalink)
daisuke149 My *** is famous! Join Date: Mar 2010 Location: Alpharetta, GA Posts: 4,849 Drives: 2013 Boss 302 PW Rep Power: 32	its not as simple as offset. has to do with design too. So theres no way to 100% answer what offset will work. like the person above, pick some wheels, and ask one of the wheel vendors. Or just call ravspec and tell them what you need and they can get it to you.

01-07-2013, 04:16 PM	#6 (permalink)
mattjk Enthusiast Member Join Date: Jul 2009 Location: Azusa Posts: 331 Drives: 09 370z K51 09 Elise Rep Power: 267	stock 18s fit the stock akebono big brakes, so if you can get a set of those, you can measure the pad to disc distance. offset has nothing to do with it. you need the "A" measurement:

01-07-2013, 06:20 PM	#10 (permalink)
clintfocus Track Member Join Date: Jan 2011 Location: los angeles Age: 39 Posts: 933 Drives: 370z, EK Civic, F150 Rep Power: 16	ZoomZoom, i posted in your thread in the track forum

01-07-2013, 09:57 PM	#15 (permalink)
guru Track Member Join Date: Dec 2011 Location: houston,tx Posts: 597 Drives: 2011 magblack 370z Rep Power: 15	is 9.5 an option for up front? __________________ JTRAN_MOTORSPORTS/GREDDY/MOTORDYNE/ACTION_CLUTCH/MEISTER_R/FORGESTAR/SPL/HOTCHKIS/SEIBON/KOGNITION/RECARO/CARBOTECH/STILLEN/PASSWORD_JDM

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