Switching to 4x100 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

why? · 11-21-2017, 09:13 AM

So I'm going through the motions of figuring out how to get the lightest possible wheels I can. I know, I'm weird like that. I know both the miata and my yaris use 4x100, and the earlier miatas use the identical setup as the yaris. What pieces would need to be changed for me to run 4x100 wheels? Is it really worth it price wise? And for the fun bit, is there any way to run the Volk ce28n I have on my yaris that are 14x5.5? I know the size sucks, but they only weigh 6.5 lbs each. And tires weight under 15 lbs each.

cjd · 11-21-2017, 10:12 AM

You can find crazy light 15" wheels in 5x100 that will clear the stock brakes. Probably a lot easier to work with than trying to find 4x hubs or adapters. Probably some 14" as well, but the brakes will be an issue. I was always wishing I could afford a good setup back when I raced a Neon ACR, which is the same bolt pattern.

Remember too, diameter changes can do weird things (especially if they're not the same F/R)

I assume you're drag racing or hyper-miling? Otherwise the added sidewall will be more of a problem than the weight loss.

Racecomp Engineering · 11-21-2017, 11:13 AM

16x7 Enkei RPF1s are 13.7 lbs. That's pretty light and you don't have to worry about fitment or swapping hubs.

14 inch wheels are not going to happen with the OEM brakes.

- Andrew

JazzleSAURUS · 11-21-2017, 11:28 AM

Many 15" wheels won't fit either. If you move to OEM FHI 4 pots up front you'll be able to clear a lot more 15" wheels, and have a nice selection of pads available. They bolt right up. iirc rears 2 pots need an adapter bracket.

churchx · 11-21-2017, 12:17 PM

One can find, if has chance to try fitment prior purchase .. but meanwhile wheel directory has only one 15" of confirmed fitment listed

mav1178 · 11-21-2017, 12:42 PM

Quote:

Originally Posted by Racecomp Engineering

14 inch wheels are not going to happen with the OEM brakes.

It could if you run hub adapters that are about 5" thick so the wheels stick out past the brakes!

Racecomp Engineering · 11-21-2017, 12:47 PM

Quote:

Originally Posted by mav1178

It could if you run hub adapters that are about 5" thick so the wheels stick out past the brakes!

Problem solved!

- Andrew

JazzleSAURUS · 11-21-2017, 12:49 PM

Perfect from 'improving' your track width right? Who needs geometry correction.

churchx · 11-21-2017, 12:57 PM

One will need to install power steering from truck though. By then .. why not swap engine and tranny as well? Imagine all that torque!

mav1178 · 11-21-2017, 01:24 PM

Quote:

Originally Posted by Racecomp Engineering

Problem solved!

baka desu ne~~

jamal · 11-21-2017, 02:04 PM

The only way to do that would be re-drilling the existing hubs and brake rotors on the car.

Swapping to the 4-pot fronts does save a bit of weight and gives you more 15" wheel options, although they are mostly rally wheels, so fairly narrow and not super light.

Conversely, you could also go to the impreza non-turbo brakes which are 276mm instead of 294. Same caliper and pad, just a shorter bracket.

Or just use 16" wheels.

Slammillionaire · 11-21-2017, 02:57 PM

This seems like a hell of a lot of work to fit tiny wheels that will probably look horrible and perform just as horribly

why? · 11-23-2017, 08:25 AM

Quote:

Originally Posted by Racecomp Engineering

16x7 Enkei RPF1s are 13.7 lbs. That's pretty light and you don't have to worry about fitment or swapping hubs.

14 inch wheels are not going to happen with the OEM brakes.

- Andrew

Neither are 15. However I figured changing the hubs to miata hubs will fix that. I figured I would have to have the brakes as well. I don't know if that is worth it or if I would need other parts.

13.7 is decent, and the tsw are 10. But the Ce28n are 6.5. That would be awesome if I could make them fit for a reasonable amount of money. That is the real question, what parts would I need to change, and would it be worth it money wise.

Quote:

Originally Posted by Slammillionaire

This seems like a hell of a lot of work to fit tiny wheels that will probably look horrible and perform just as horribly

Don't care how they look. Lightweight is always preferred for everything, and frankly the tires perform way better than I ever thought they would on my Yaris. I'm one of those weird people that thinks the stock tires have too much grip, I like sliding around on the street, it is a heck of a lot more fun.

churchx · 11-23-2017, 12:04 PM

I wonder how much steering sharpness feel can be attributed to sidewall hight, and how much to tire type. Would be interesting, how some performance tires mounted on 16x7 would feel, i'm not sure it's right to compare in feel summer performance 17" tires with winter 16" ones for apples to apples comparison.

11-21-2017, 09:13 AM	#1
why? Only happy when it rains. Join Date: Feb 2013 Drives: series.blue Location: Harnett county NC Posts: 1,995 Thanks: 5,698 Thanked 1,263 Times in 749 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	Switching to 4x100 So I'm going through the motions of figuring out how to get the lightest possible wheels I can. I know, I'm weird like that. I know both the miata and my yaris use 4x100, and the earlier miatas use the identical setup as the yaris. What pieces would need to be changed for me to run 4x100 wheels? Is it really worth it price wise? And for the fun bit, is there any way to run the Volk ce28n I have on my yaris that are 14x5.5? I know the size sucks, but they only weigh 6.5 lbs each. And tires weight under 15 lbs each.

11-21-2017, 11:28 AM	#4
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 558 Times in 351 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Many 15" wheels won't fit either. If you move to OEM FHI 4 pots up front you'll be able to clear a lot more 15" wheels, and have a nice selection of pads available. They bolt right up. iirc rears 2 pots need an adapter bracket. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

11-21-2017, 12:49 PM	#8
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 558 Times in 351 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Perfect from 'improving' your track width right? Who needs geometry correction. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

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11-21-2017, 11:13 AM	#3
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,406 Thanks: 3,419 Thanked 7,241 Times in 2,962 Posts Mentioned: 303 Post(s) Tagged: 9 Thread(s)	16x7 Enkei RPF1s are 13.7 lbs. That's pretty light and you don't have to worry about fitment or swapping hubs. 14 inch wheels are not going to happen with the OEM brakes. - Andrew

11-21-2017, 12:17 PM	#5
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,085 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	One can find, if has chance to try fitment prior purchase .. but meanwhile wheel directory has only one 15" of confirmed fitment listed

11-21-2017, 12:57 PM	#9
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,085 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	One will need to install power steering from truck though. By then .. why not swap engine and tranny as well? Imagine all that torque!

11-21-2017, 02:04 PM	#11
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 365 Times in 204 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	The only way to do that would be re-drilling the existing hubs and brake rotors on the car. Swapping to the 4-pot fronts does save a bit of weight and gives you more 15" wheel options, although they are mostly rally wheels, so fairly narrow and not super light. Conversely, you could also go to the impreza non-turbo brakes which are 276mm instead of 294. Same caliper and pad, just a shorter bracket. Or just use 16" wheels.

11-21-2017, 02:57 PM	#12
Slammillionaire Senior Member Join Date: Jan 2017 Drives: 2013 Hot Lava FRS Location: New Jersey Posts: 518 Thanks: 183 Thanked 527 Times in 259 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	This seems like a hell of a lot of work to fit tiny wheels that will probably look horrible and perform just as horribly

11-23-2017, 12:04 PM	#14
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,085 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	I wonder how much steering sharpness feel can be attributed to sidewall hight, and how much to tire type. Would be interesting, how some performance tires mounted on 16x7 would feel, i'm not sure it's right to compare in feel summer performance 17" tires with winter 16" ones for apples to apples comparison.

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