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Brake Clearance Issue Volk Gtcs

Raimi_R
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Raimi_R Apprentice

Raimi_R

Posted
Posted

Hey guys

Bit of a pickle here, I'm ordering some Volk GTCs for my r33 gtst series 2. Now the rears are finalised and will clear brakes (19*9.5+24) but for there's a bit of an issue wit getting the right offset for the fronts.

I'm ordering through Jesse Streeter, and I got him to ask RAYS if 19*8.5+29 Face 2 (Disk A too, which is supposed to give more clearance) would clear my front brakes. Now they replied that they have never tested it, thus cannot guarantee that it will clear.

I'm just wondering if this is just due to them being conservative, or if the offsets and spoke design are actually cutting it fine?

The offsets don't seem rediculous for an r33 gtst (i had 8.5 +22 before) but it's making me wonder if it's got more to do with spoke design?

Thanks guys

Oh, also if anyone has a 33 with gtc's, feel free to post up pics and specs :) I only seen a handful on SAU, from my haphazard searching techniques

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https://www.sau.com.au/forums/topic/359290-brake-clearance-issue-volk-gtcs/
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joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

offset will NOT affect brake clearance.

you can have a +50 or a -50 and the spoke will be the exact same distance from the calliper, it's the actual wheel that will be in a different spot.

if anything those will probably hit the UCA...

alr33x Grand Master

alr33x

Posted
Posted

offset will NOT affect brake clearance.

you can have a +50 or a -50 and the spoke will be the exact same distance from the calliper, it's the actual wheel that will be in a different spot.

if anything those will probably hit the UCA...

this apply for all rim designs or only some, cos my eurolines dont fit the front deepdish 9+30 but with a spacer they fit so effectively altering the offset?

if im wrong i just learnt something new

PM-R33 Grand Master

PM-R33

Posted
Posted

Nope Hamish is right.

A spacer doesn't change the offset, it simply move the entire rim outwards. Think about it, you are in essence adding length to your hub.

The only time offset alters brake clearance is if it starts to change the spoke angle. Ie on a TE37 with a high offset the spokes are flat, however when you go to a low offset the spokes start to bend outwards.

So to answer OP's question, you will be fine. I have GTC's and they don't even come close to hitting the brakes.

gallery_35676_3285_115345.jpg

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

this apply for all rim designs or only some, cos my eurolines dont fit the front deepdish 9+30 but with a spacer they fit so effectively altering the offset?

if im wrong i just learnt something new

if you had your eurolines in a lower offest you would still need to use the spacer as they just have shit brake clearance.

most jap rims are available in a few differing "faces" or spoke shapes.

by adding a spacer, yes you are effectively lowering the offset and moving the whole rim outwards, but this is not indicative of factory offsets where the correct stud length is retained...

try to think of it like this:

the spokes are always in the exact same spot, no matter what offset the rim is made in, but the position of the rim will change.

this is probably easiest to imagine with something like work meisters, as they are a 3 pc rim.

they make the spokes (all exactly the same) and then simply bolt them into differing places on the rim to create different offsets

alr33x Grand Master

alr33x

Posted
Posted

well it changes the effective offset not the fixed offset.

ie a 9 +30 with a 25mm spacer is effectively a 9+5, i know the rim structurally isnt changing but the whole mounting position is moving outward thus giving more clearence in effect.

or no?

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

well it changes the effective offset not the fixed offset.

ie a 9 +30 with a 25mm spacer is effectively a 9+5, i know the rim structurally isnt changing but the whole mounting position is moving outward thus giving more clearence in effect.

or no?

that is 100% correct :)

PM-R33 Grand Master

PM-R33

Posted
Posted

ah thought so, soo offset can be relevant to brake clearence.

either way OP should get better sizes/offsets and let his nuts hang low.

Only when talking about spacers as you are increasing the width of the hub. You aint changing anything about the wheel.

Regardless what offset he chooses it aint going to affect brake clearance unless the spoke design changes such as my TE37 example.

pistol-pete Veteran

pistol-pete

Posted
Posted

Only when talking about spacers as you are increasing the width of the hub. You aint changing anything about the wheel.

Regardless what offset he chooses it aint going to affect brake clearance unless the spoke design changes such as my TE37 example.

but the point is if he uses a spacer to reduce his effective then that will improve brake clearance

VNS 24 Mentor

VNS 24

Posted
Posted (edited)

Hey guys

Bit of a pickle here, I'm ordering some Volk GTCs for my r33 gtst series 2. Now the rears are finalised and will clear brakes (19*9.5+24) but for there's a bit of an issue wit getting the right offset for the fronts.

I'm ordering through Jesse Streeter, and I got him to ask RAYS if 19*8.5+29 Face 2 (Disk A too, which is supposed to give more clearance) would clear my front brakes. Now they replied that they have never tested it, thus cannot guarantee that it will clear.

I'm just wondering if this is just due to them being conservative, or if the offsets and spoke design are actually cutting it fine?

The offsets don't seem rediculous for an r33 gtst (i had 8.5 +22 before) but it's making me wonder if it's got more to do with spoke design?

Thanks guys

Oh, also if anyone has a 33 with gtc's, feel free to post up pics and specs :) I only seen a handful on SAU, from my haphazard searching techniques

They would be fine, mate. I've also got 19x8.5 +5 (Face 2) at the front of my V35 coupe and there's plenty of room. Plus I asked alot of mechanics if I can upgrade to bigger brakes with these wheels, all of them said I can. :)

Good luck.

Edited by VNS 24
Beer Baron Grand Master

Beer Baron

Posted
Posted

are you talking about factory brakes? of course they will clear. your factor wheels are like 16X7 with +35 or +40 offset and have thick spokes and still clear the puny factory brakes. and you're worried a set of aftermarket 19inch wheels won't fit? seriously? dude you could fit your brakes and a pizza dish in there.

Raimi_R Apprentice

Raimi_R

Posted
  • Author
Posted

offset will NOT affect brake clearance.

you can have a +50 or a -50 and the spoke will be the exact same distance from the calliper, it's the actual wheel that will be in a different spot.

if anything those will probably hit the UCA...

Ahh I see what what you mean. It's just the position of the "barrel" of the rim that changes....so basically, if I'm picturing it right, having a lower offset would then give more suspension clearance? As the barrel of the rim is positioned outward more? Or is that a rookie mistake? lol

Nope Hamish is right.

A spacer doesn't change the offset, it simply move the entire rim outwards. Think about it, you are in essence adding length to your hub.

The only time offset alters brake clearance is if it starts to change the spoke angle. Ie on a TE37 with a high offset the spokes are flat, however when you go to a low offset the spokes start to bend outwards.

So to answer OP's question, you will be fine. I have GTC's and they don't even come close to hitting the brakes.

gallery_35676_3285_115345.jpg

Your car's actually the inspiration for going with GTCs, looks bloody mint....don't worry, will be going a different colour tongue.gif

ah thought so, soo offset can be relevant to brake clearence.

either way OP should get better sizes/offsets and let his nuts hang low.

Yeh the reason I used those offsets was because I thought I needed to....The next offset down is 8.5 +17, extra 13mm of dish (total 55mm) biggrin.gif. The rears in B disk 9.5+24 already give 73mm of lip, which is plenty to keep me happy lol. Next one up is 9.5+12 and 86mm...

are you talking about factory brakes? of course they will clear. your factor wheels are like 16X7 with +35 or +40 offset and have thick spokes and still clear the puny factory brakes. and you're worried a set of aftermarket 19inch wheels won't fit? seriously? dude you could fit your brakes and a pizza dish in there.

Yeh that's what I thought too. The only reason I posted this was on the advice of Jesse. He got a reply back from RAYS stating that the GT-C Face 1 19x8.5J+28 (B disk) won't clear my brakes. I think this may be more to do with the spoke design (Face 1 is flat spokes, Face 2 is concave) and the fact that it was B disk, or they could've just made a calculation mistake, I don't know. Either way, rather get a few opinions first before blowing all that cash money.

Oh and thanks for the info guys, much appreciated

PM-R33 Grand Master

PM-R33

Posted
Posted

Ahh I see what what you mean. It's just the position of the "barrel" of the rim that changes....so basically, if I'm picturing it right, having a lower offset would then give more suspension clearance? As the barrel of the rim is positioned outward more? Or is that a rookie mistake? lol

Yes that's correct.

Your car's actually the inspiration for going with GTCs, looks bloody mint....don't worry, will be going a different colour :P

Hahaha all good man, cheers.

Post up pictures once you have them. I want to one day piss off my rears and put some deeper dish 19" on the back for the staggered look.

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