Convex / Concave - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Orbital · 11-29-2015, 03:01 PM

Going to buy the Enkei Raijin most likely very soon.
I wanted to stagger them 18x8.5 front and 18x9.5 rear.
However, I think that's going to be noticeable and the fronts would be convex, which is no good imo.

So, I thought of doing 18x9.5 all around on a slightly meatier tire like Mich PSS in 245/35 front and 265/35 rear. I know I would need coils for that 9.5 to fit the front, but is it weird to run staggered tire sizes, but square wheels???

I could just run 245 square and be done, but then I could do that on 8.5 with stock suspension. Not sure if it's worth it to be all concave... I could just be all convex. Ugh! Decisions!

swarb · 11-29-2015, 03:24 PM

You could also run square setup(including tires) and run a small spacer in the rear to make the fit more even to the fenders.

AlexWood · 12-07-2015, 03:29 PM

Imo, all concave will look way better. I don't think you would necessarily need coils to fit a 9.5 up front, depending on offset and camber. As far as running staggered tire sizes, I don't think it would be an issue as long as they are the same model, but I've never tried it so I don't have any firsthand experience.

Sent from my iPhone using Tapatalk

speeddemon · 12-07-2015, 04:12 PM

it's funny I just spent a bunch of time looking at the Enkei Raijins. I'm between these and the XXR 530's. Obv the price of the XXR's are awesome but I really have to have more of a glossy black which the Raijins are. In a perfect world I would probably get the Raijins and run 9.5 all around but according the the Raijin thread you absolutely need coilovers..and that I am not doing. So the other option would be to run a staggered setup and I'm okay with the look but worried about damaging the handling balance..I know there will be more understeer..not good.. Or do I just go with the XXR's and paint them? (since I am wary about powdercoating)

Summerwolf · 12-07-2015, 04:17 PM

Why are you wary of powdercoating?

speeddemon · 12-07-2015, 04:41 PM

it definately compromises the structural integrity of the wheel because of the heat added in the process..with XXR's being on the cheap side to begin with I wouldn't want to stress them anymore..

NyC Zn6 · 12-07-2015, 05:21 PM

Quote:

Originally Posted by speeddemon

it definately compromises the structural integrity of the wheel because of the heat added in the process..with XXR's being on the cheap side to begin with I wouldn't want to stress them anymore..

you just narrowed down you choice to the Rajins lol

evomike · 12-07-2015, 05:38 PM

Quote:

Originally Posted by speeddemon

it definately compromises the structural integrity of the wheel because of the heat added in the process..with XXR's being on the cheap side to begin with I wouldn't want to stress them anymore..

This is not true at all

speeddemon · 12-08-2015, 08:23 AM

Quote:

Originally Posted by evomike

This is not true at all

Really? This is what I have read from several sources.

speeddemon · 12-08-2015, 08:24 AM

Quote:

Originally Posted by NyC Zn6

you just narrowed down you choice to the Rajins lol

I think I want to go this way....I could get the XXR chrome black's and "hope" they are more black than silver....I have seen some that are very silver and others that look really dark

Summerwolf · 12-08-2015, 08:46 AM

Quote:

Originally Posted by speeddemon

it definately compromises the structural integrity of the wheel because of the heat added in the process..with XXR's being on the cheap side to begin with I wouldn't want to stress them anymore..

Forum sources? Whats the stressful part that compromises the structural integrity?

speeddemon · 12-08-2015, 09:09 AM

Quote:

Originally Posted by Summerwolf

Forum sources? Whats the stressful part that compromises the structural integrity?

Yes, forum sources. I'd like to go this route but taking a cheap rim (XXR) and powdercoating worries me. If the general consensus is that this is fine then I'd probably like to go this way..

Summerwolf · 12-08-2015, 09:32 AM

I would suggest you do some actual research in to it, and make your own decision.

Having said that, I have had multiple items powdercoated and the only thing I can say is it has always looked good and been easy to maintain. Nothing but benefits IMO. (Brake calipers on multiple cars, wheels, one cars rear IRS cradle.... lots of stuff.)

speeddemon · 12-08-2015, 10:11 AM

well if forum information is no good I don't trust what you say Summerwolf....because this is a FORUM

11-29-2015, 03:01 PM	#1
Orbital Member Join Date: Aug 2015 Drives: 2016 FRS Location: Orange City, FL Posts: 17 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Convex / Concave Going to buy the Enkei Raijin most likely very soon. I wanted to stagger them 18x8.5 front and 18x9.5 rear. However, I think that's going to be noticeable and the fronts would be convex, which is no good imo. So, I thought of doing 18x9.5 all around on a slightly meatier tire like Mich PSS in 245/35 front and 265/35 rear. I know I would need coils for that 9.5 to fit the front, but is it weird to run staggered tire sizes, but square wheels??? I could just run 245 square and be done, but then I could do that on 8.5 with stock suspension. Not sure if it's worth it to be all concave... I could just be all convex. Ugh! Decisions!

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11-29-2015, 03:24 PM	#2
swarb Senior Member Join Date: Sep 2014 Drives: BRZ Location: Los Angeles Posts: 3,052 Thanks: 1,773 Thanked 2,451 Times in 1,271 Posts Mentioned: 79 Post(s) Tagged: 0 Thread(s)	You could also run square setup(including tires) and run a small spacer in the rear to make the fit more even to the fenders.

12-07-2015, 03:29 PM	#3
AlexWood Member Join Date: Feb 2014 Drives: Posts: 89 Thanks: 7 Thanked 16 Times in 13 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Imo, all concave will look way better. I don't think you would necessarily need coils to fit a 9.5 up front, depending on offset and camber. As far as running staggered tire sizes, I don't think it would be an issue as long as they are the same model, but I've never tried it so I don't have any firsthand experience. Sent from my iPhone using Tapatalk

12-07-2015, 04:12 PM	#4
speeddemon Senior Member Join Date: Dec 2014 Drives: Scion frs Location: Pennsylvania Posts: 162 Thanks: 33 Thanked 30 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	it's funny I just spent a bunch of time looking at the Enkei Raijins. I'm between these and the XXR 530's. Obv the price of the XXR's are awesome but I really have to have more of a glossy black which the Raijins are. In a perfect world I would probably get the Raijins and run 9.5 all around but according the the Raijin thread you absolutely need coilovers..and that I am not doing. So the other option would be to run a staggered setup and I'm okay with the look but worried about damaging the handling balance..I know there will be more understeer..not good.. Or do I just go with the XXR's and paint them? (since I am wary about powdercoating)

12-07-2015, 04:17 PM	#5
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	Why are you wary of powdercoating?

12-07-2015, 04:41 PM	#6
speeddemon Senior Member Join Date: Dec 2014 Drives: Scion frs Location: Pennsylvania Posts: 162 Thanks: 33 Thanked 30 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	it definately compromises the structural integrity of the wheel because of the heat added in the process..with XXR's being on the cheap side to begin with I wouldn't want to stress them anymore..

12-08-2015, 09:32 AM	#13
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	I would suggest you do some actual research in to it, and make your own decision. Having said that, I have had multiple items powdercoated and the only thing I can say is it has always looked good and been easy to maintain. Nothing but benefits IMO. (Brake calipers on multiple cars, wheels, one cars rear IRS cradle.... lots of stuff.)

12-08-2015, 10:11 AM	#14
speeddemon Senior Member Join Date: Dec 2014 Drives: Scion frs Location: Pennsylvania Posts: 162 Thanks: 33 Thanked 30 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	well if forum information is no good I don't trust what you say Summerwolf....because this is a FORUM

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