Miata Turbo Forum - Boost cars, acquire cats.

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-   Wheels and Tires (https://www.miataturbo.net/wheels-tires-78/)
-   -   Soo, which one? K1's vs. C1's (pics inside) (https://www.miataturbo.net/wheels-tires-78/soo-one-k1s-vs-c1s-pics-inside-56319/)

Sean 03-17-2011 02:19 PM

K1's but I have them on my car. When I was running it on street tires with the crappy tune I had estimated at 300 hp there is more than enough tire back there to do the job. It would take a ton of tire to get traction in 1st but that is any boosted car, and I am sure you do not want to run slicks and do hole shots.

viperormiata 03-17-2011 06:29 PM


Originally Posted by kotomile (Post 702607)
I guess I didn't think I needed to break it down Barney-style for this crowd, but yes, wider wheels allow one to run wider tires.

15x7 might be enough for some, I don't want to cram a 225 onto a 7" wide wheel.

I feel insulted, we used to be Myspace friends! :giggle:

Anyway, let me break it down for you Barney-style. 225 on a 7 is not cramming, at all. 15x8 is not superior to a 15x7 (unless you are some turd track racer :fawk:) for a street car. It's all about side wall height and tire compound.

I had to be convinced of this, luckily I had a friend do it for me. He decided to show me what a two-step, death launch was like in his E30 (over 450wtq). The car hooked first on 14x6.5 wheel with a 235 tire and nearly broke my neck.

After I used a garden hose to clean out of my underwear I completely dropped my argument about why I needed 15x9 wheels for my car and he just laughed at me.

Nagase 03-17-2011 07:03 PM

What viperormiata said is true. For straight lines.

I like turning too much to put 225's on a 7" wheel. Done it before.

_spyder 03-17-2011 08:08 PM


Originally Posted by Sean (Post 702791)
K1's but I have them on my car. When I was running it on street tires with the crappy tune I had estimated at 300 hp there is more than enough tire back there to do the job. It would take a ton of tire to get traction in 1st but that is any boosted car, and I am sure you do not want to run slicks and do hole shots.

Thanks for the input. I know 1st is pretty hard to get traction in, I just bought some new 205/50 Nitto NeoGen's so I'm hoping that will atleast give me full traction in 2nd. I know 1st will slip once the boost hits, but it is what it is. I'll worry about an LSD first, then once I can turn up the boost I'll look for something wider/stickier.


Originally Posted by viperormiata (Post 702949)
I feel insulted, we used to be Myspace friends! :giggle:

Anyway, let me break it down for you Barney-style. 225 on a 7 is not cramming, at all. 15x8 is not superior to a 15x7 (unless you are some turd track racer :fawk:) for a street car. It's all about side wall height and tire compound.

I had to be convinced of this, luckily I had a friend do it for me. He decided to show me what a two-step, death launch was like in his E30 (over 450wtq). The car hooked first on 14x6.5 wheel with a 235 tire and nearly broke my neck.

After I used a garden hose to clean out of my underwear I completely dropped my argument about why I needed 15x9 wheels for my car and he just laughed at me.

Right now I'm going to stick with 205/50's, I think that will get the job done until I get an LSD and turn up the boost. I know there is a lot of factors anyway instead of just a wider rim.

Sounds like you had a damn good time in your friend's E30. I need some friends that can walk on my Miata :bowrofl:


Originally Posted by Nagase (Post 702969)
What viperormiata said is true. For straight lines.

I like turning too much to put 225's on a 7" wheel. Done it before.

I'll be doing a mix of both. But it is my DD after all.

kotomile 03-18-2011 04:57 AM

Nothing personal, Viper. But Nagase...


Originally Posted by Nagase (Post 702969)
What viperormiata said is true. For straight lines.

I like turning too much to put 225's on a 7" wheel. Done it before.

...took the words right out of my mouth.

viperormiata 03-18-2011 05:25 AM

PSHHHH! Corners are for suckers :hustler:

Straight line is where it's at :bigtu:

cueball1 03-18-2011 01:16 PM

Kosei's.

For lots of reasons but here's one most wouldn't consider - ease of cleaning! Kosei's are a breeze to wash compared to my 6uls.

GDSpeed 03-18-2011 02:28 PM

The Kosei's are probably the best looking wheels on the NA - I'd refinish them from white to gunmetal or black though. That has to be a bitch to deal with everyday

Braineack 03-18-2011 02:53 PM

I wish mine were the factory white and not sprayed silver :)

Oscar 03-18-2011 03:27 PM

I liked them best dirty after a trackday, covered in brakedust. I like the gunmetal finish produced by the XP8s.

9671111 03-18-2011 11:15 PM

Had the Kosei K1s, loved em, but those C1s are hot shit.

_spyder 03-19-2011 03:12 AM


Originally Posted by cueball1 (Post 703330)
Kosei's.

For lots of reasons but here's one most wouldn't consider - ease of cleaning! Kosei's are a breeze to wash compared to my 6uls.

Haha, I never thought about that until you said it, but yeah, these are a easy wheel to clean. I like the solid spokes, no need to get in any cracks :giggle:


Originally Posted by GDSpeed (Post 703346)
The Kosei's are probably the best looking wheels on the NA - I'd refinish them from white to gunmetal or black though. That has to be a bitch to deal with everyday

Yeah, they do get dirty pretty easily, but I love them white. I am thinkin' about filling in the curb rash and repainting them white as a matter of fact.


Originally Posted by Braineack (Post 703365)
I wish mine were the factory white and not sprayed silver :)

I couldn't be happier with them ;) I'll be continuing the white scheme in a few other places as well.

my97miata 11-24-2011 12:05 PM

Just a tid bit, TireRack now sell Kosei K1's with 25mm and 30mm offsets. This should push the wheels out further making them look even nicer. You can also get them in 12.4 pounds weight.

Boris 11-24-2011 12:24 PM

I'm thinking of painting mine white, they need a facelift anyway. A ton of wax should keep the cleanup to a minimum.

Spyder, how about some updated pictures ?


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