Ultimate auto-x wheel & tire combo

[rsafier]

Well one thing I know about Kodiak's from a GB of 15x10s for the E30 that was last year is the quality control was piss poor. The center hub is undersized, every time he installs/uninstalls the wheels it was requiring a mallet, plus I know he had issues with getting delivery.

Obviously tho you don't have a lot of choices if you want a 3pcs wheel in 4x100 other then custom made. I still think if I every dropped from the 18x10 combo I'd get Diamond Racing Wheels in the extra lightweight steel. I think it was going to be <5# per wheel difference.

As for tirewear I actually pushed 150 runs out of my last set, died from heatcycles not wear. It started just requiring Formula V treatment to get 3 good runs before it would die again. BTW, the Formula V stuff really does work, kinda smelly to work with, but takes dead tires and does give them new life. Using it on my new set, going to see how much longer the useful life is on my V710s.

[xLibelle]

i'm starting to wonder about formV though. Its like its been shortening the life once used. Yeah, it does a good job for the outer coat but the life starts to drop off considerably after application. Plus, i'm working with older tires, i'm afraid to put it on my brand new ones for this speculation alone so i dont know exactly what to expect.

[rsafier]

From what I've read on the SCCAForums a lot of those guys are using it on brand new tires (as they claim you should do), and it is suppose to extend the life.
I noticed no decrease in life, just that the tire returned after a heatcycle or two back to there "hard" condition. Not that they didn't grip, but it was nothing compared to fresh, but then you r-compound people know what I'm talking about. As a $20 bottle easily could last a full season or two its not a bad investment.

[hoyabmw]

Well one thing I know about Kodiak's from a GB of 15x10s for the E30 that was last year is the quality control was piss poor. The center hub is undersized, every time he installs/uninstalls the wheels it was requiring a mallet, plus I know he had issues with getting delivery.

Obviously tho you don't have a lot of choices if you want a 3pcs wheel in 4x100 other then custom made. I still think if I every dropped from the 18x10 combo I'd get Diamond Racing Wheels in the extra lightweight steel. I think it was going to be <5# per wheel difference.

I already checked with Diamond, and their lightweight wheels won't fit. If you're willing to run a 1" spacer to clear the brake caliper, then they can make a set. Personally I'm not willing to do that--it would also negate a lot of the weight savings to get that extra offset. I really don't care about 1 piece vs. three piece, but weight does matter. I really noticed the extra weight of the 16x9s I ran last year at ~21 lbs apiece, plus the 245/45/16s were heavy tires.

I have another order in the works for 15x10 aluminum wheels, made in the USA. I've gotten good recommendations about the company, and they can get them done in 2-3 weeks as opposed to mid June for Kodiak. I'll let you guys know if it works out.

[Jeremiel5]

STS:

ESU 15x7 +10 or 0 offset w/ 225/45/15 Falken Azenis 615




does anyone know where i can find some cheap lightweight 15x7.5?

[fourcylsgood]

Two 15x7.5 options I have seen talked about recently...

Rota Slipstream from 18Racing.com

http://18racing.com/wheel_slipstream.html

15x7.5 +20 57.1 mm centrebore, E30-specific fitment

6UL from 949 Racing
http://949racing.com/index.asp?PageA...ATS&Category=2
15x7.5 +34 59.1 mm centrebore, probably will need spacers

[Fair!]

Anything light and 15x10.5" wide. 275 35 15 Hoosiers.

+1 to this! The 275/35/15 Hoosier is earth shattering for so many classes... everyone is ditching their 18x10s (and 285/30/18 tires) and going to the this new 15" WunderTire.... if 15" wheels can fit over their rotors.



We just ditched the 18x10/285 combo for our E36 and went back to our 17x10/17x11 combination with 275s. 17" race tires are so much cheaper than 18" tires... we spent 70% less to get 17" tires vs 18" V710s.

We're all over the place on our STS E30...


left: 15x7, 13.9 pounds. right: 16x7, 15.0 pounds

We've been using 15x7 and 16x7 wheels Jack at Elephant sold us. Now I see he's working on a lightweight 15x7, 15x7.5 and 15x8", so there's more we might need to try! :D

[DSP74]

Who has actually ran back to back testing with the combos? the 18" definately puts down a bigger patch, longer as well as slightly wider. At a rotating weight expense.

[rsafier]

Who has actually ran back to back testing with the combos? the 18" definately puts down a bigger patch, longer as well as slightly wider. At a rotating weight expense.

E30 Racer was running my 18x10 wheels before I bought them from him. now runs on 15x10s. We held the tires up to each other, were nearly identical. He could ellaberate on pros/cons as far as his results.

[Jeremiel5]

We're all over the place on our STS E30...


left: 15x7, 13.9 pounds. right: 16x7, 15.0 pounds

We've been using 15x7 and 16x7 wheels Jack at Elephant sold us. Now I see he's working on a lightweight 15x7, 15x7.5 and 15x8", so there's more we might need to try! :D

DAMN, i like that 15x7 OZ @ 13.9 pounds. it's comparable to the Rota's Slipstream 15x7 @ 12.9 lbs and 15x7.5 @ 13.7 lbs or Kosei K1 TS 15x7 @12.6 lbs or Kosei K1 Racing 15x7 @ 13.5 lbs per wheelweights.net

this will still keep me in STS class. do you have videos of your e30 auto-xing? also, do you have a URL of your STS class e30 setup? I'd like to review what you have and maybe mimic it, well, I'm trying out different setups to see what works well, but if someone already has prior knowledge/experience and it works well, then I'd like to learn more about it. I appreciate it, sir.

[Fair!]

DAMN, i like that 15x7 OZ @ 13.9 pounds. it's comparable to the Rota's Slipstream 15x7 @ 12.9 lbs and 15x7.5 @ 13.7 lbs or Kosei K1 TS 15x7 @12.6 lbs or Kosei K1 Racing 15x7 @ 13.5 lbs per wheelweights.net

this will still keep me in STS class. do you have videos of your e30 auto-xing? also, do you have a URL of your STS class e30 setup? I'd like to review what you have and maybe mimic it, well, I'm trying out different setups to see what works well, but if someone already has prior knowledge/experience and it works well, then I'd like to learn more about it. I appreciate it, sir.

I am distrustful of all wheelweights I see posted online. I only tend to believe what I can test myself, measure, and prove with pictures. Every time I rely on internet numbers they end up being wrong. Even online tire reseller's numbers tend to be optimistic, sometimes by a lot. Its a conspiracy man! ;) I have always been one to "question everything" and we use multiple digital scales (ie: lie detectors) to verify the data we post. Dynos and scales... love these tools for the truth they can bring to interweb arguments.

Just an update on the 16x7" wheels I posted about for our STS E30, as I just snapped some pics with the new OZs mounted:



This is with our 5mm spacers at each corner.

It could use 10-15mm spacers and "look better". When we make production 4x100 bolt circle E30 BMW wheel spacers in 10mm and 15mm thicknesses we'll test them with these. We might even make up some custom wheel spacers that convert a BMW hub size to the more popular Miata wheel hub bore (what these particular wheels are made to) so they are truly hubcentric. We mentioned this offhand on this forum once and had several folks reply that they would be interested in us making these spacers as a product, because there are SO many Miata wheels that would work on an E30 if these "conversion" spacers were offered... thoughts?


Vorshlag 75mm wheel studs, lug nuts and 5mm spacers. 205/45/16 Bridgestone RE01Rs (thanks Bridgestone!)

Several more pictures located here. Some set-up info here.

[Bimmerman325i]

We might even make up some custom wheel spacers that convert a BMW hub size to the more popular Miata wheel hub bore (what these particular wheels are made to) so they are truly hubcentric. We mentioned this offhand on this forum once and had several folks reply that they would be interested in us making these spacers as a product, because there are SO many Miata wheels that would work on an E30 if these "conversion" spacers were offered... thoughts?

I would definitely be interested in a conversion spacer that allows you to mount Miata/Mini wheels with their centerbore and be hubcentric with the right offset for the e30. I would definitely buy a set.

[steve k.]

i run Jongbloed Racing wheels. 15x10 at 15lb. The price is similar to Kodiak but the company is local to me in Morgan Hill, CA. His turn around is about 4-6 weeks and customer service is great! the wheels are custom and made to your spec.

steve k.

[z31maniac]

DAMN, i like that 15x7 OZ @ 13.9 pounds. it's comparable to the Rota's Slipstream 15x7 @ 12.9 lbs and 15x7.5 @ 13.7 lbs or Kosei K1 TS 15x7 @12.6 lbs or Kosei K1 Racing 15x7 @ 13.5 lbs per wheelweights.net

this will still keep me in STS class. do you have videos of your e30 auto-xing? also, do you have a URL of your STS class e30 setup? I'd like to review what you have and maybe mimic it, well, I'm trying out different setups to see what works well, but if someone already has prior knowledge/experience and it works well, then I'd like to learn more about it. I appreciate it, sir.

Or you could buy my SSR comps, 16 x 7 ~11lbs, run a 215/45/16 RT-615 or R1R in 225/45/16 when they come out.

[aleks]

Bringing back an old thread.

Steve K. Thanks for that link do Jongbeloed racing have an email address?

What are some good wheel options in 17X10, 17X11, 18X10, and 18X11? apart from Jongbeloed racing and Kodiak?