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Old 01-31-2012, 11:44 AM   #61
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haha, well I am glad to know I could fit my brakes on a 17x9, but its a different story trying to fit brakes under a 15x9 or 15x8. Its safe to say the RPF1s are not ideal for fitting big brakes on a miata.

I gotta say I love how boost_joose and 2Bit have been marked for negative props.
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Old 01-31-2012, 11:47 AM   #62
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Originally Posted by TheHeartBreakKid View Post
yea me too. but i wonder if it would be a noticeable difference if the same size tire was ran all the way around but staggered rims size.

I will repeat myself: What benefit is there? People run staggered wheels with square tires on AWD cars because you have to run the same tire height on them to keep from frying the center diff, and running a mildly pinched tire on the rear keeps the tire height the same while slightly reducing rear contact patch to improve rotation/ breakaway characteristics.

What benefit would there be in doing this on a RWD car? What tires would you run? Like Curly said, you shouldn't run a 225 on a 7" wheel. You might as well put a 205 on it, because that's all the tire you'll have on the ground.

Sell your staggered wheels on Club Roadster, and buy something with a purpose.
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Old 01-31-2012, 11:50 AM   #63
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Quote:
Originally Posted by vehicular View Post
I will repeat myself: What benefit is there? People run staggered wheels with square tires on AWD cars because you have to run the same tire height on them to keep from frying the center diff, and running a mildly pinched tire on the rear keeps the tire height the same while slightly reducing rear contact patch to improve rotation/ breakaway characteristics.

What benefit would there be in doing this on a RWD car? What tires would you run? Like Curly said, you shouldn't run a 225 on a 7" wheel. You might as well put a 205 on it, because that's all the tire you'll have on the ground.

Sell your staggered wheels on Club Roadster, and buy something with a purpose.
Let him go and run his awesome staggered set-up, he knows more than everyone here and I'm tired of reading his posts.
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Old 01-31-2012, 12:01 PM   #64
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Thank you Curly and Vehicular. Now i know that 225s are too big for 7s.
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Old 01-31-2012, 12:39 PM   #65
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Originally Posted by TheHeartBreakKid View Post
Thank you Curly and Vehicular. Now i know that 225s are too big for 7s.
They're jacking with you. I've been running 225 NT-01s on 7" wheels for a couple years and have the trophies to back up that combo.
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Old 01-31-2012, 01:39 PM   #66
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Lol. Yes you can, and as Vehicular said it'll be ballooned to the contact patch of a 205. Or you can listen to Hustler, the majority of the time he's right.
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Old 01-31-2012, 01:43 PM   #67
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I run 225/45 RS3's on my 15x7 Kosie K1 TS and they work fine. Later this year I am hoping to upgrade to 15x9 6UL.
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Old 01-31-2012, 02:29 PM   #68
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I run 225/45 RS3's on my 15x7 Kosie K1 TS and they work fine. Later this year I am hoping to upgrade to 15x9 6UL.
resisting the urge to talk serious smack to you.

hahha, you aren't the only one though. I think a know a few other miatas that run 225/45s on a x7.
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Old 02-01-2012, 09:41 PM   #69
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Originally Posted by vehicular View Post
I've owned and abused a bunch of RPF1s myself, and have been in close contact with dozens of autocrossed/ track day-ed sets over the years, and have never, EVER heard of someone cracking one. In fact, the only bent RPF1s I've seen were on a THOROUGHLY wrecked S2000 that went end over end through a gravel trap. You couldn't possibly choose a tougher wheel.
+1.

I have absolutely beat the crap out of several sets of Enkie RP-F1 wheels for many, many seasons. So have several friends. I have yet to see one crack. These wheels are awesome. That said, I have had a couple of minor bends and one major, all 100% my fault and the dents were tiny compared to the damage I expected.

I have seen cracked wheels, including 6ULs, Kosei K1's, and others.

We had a Miata rollover at an event due to a cracked wheel breaking. High g-load right-hander with sharp bump @ the apex, outside left-wheel sheared at the spokes. Post roll-over inspection showed that several of that car's wheels had small, hairline cracks.

I run Enkie RP-F1 (15x7"), Enkie PF-01 (15x8"), and 6UL (15x9"). All of these have been good to me. If RP-F1s came in 15x8 and/or 15x9 and allowed for bigger than stock calipers, then that's all I'd run.

What ever you do run...check them closely. The cracks you are looking for are (hopefully!) very small.

You don't want this happening to you...


Wheels for Racing-brokenwheel.jpg
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Old 02-01-2012, 11:11 PM   #70
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Originally Posted by 1993ka24det View Post
ScottFW said big brakes like these (http://flyinmiata.com/index.php?dept...5%20%201990-93) wont fit on RPF1's, is there any more info on that
yes, it is the reason I have a set of RPF1s with S-drives with less than 100 miles just setting in my garage--inadequate clearance for m-tuned BBK

you can store them in yours for $600, plus shipping--lol
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Old 02-01-2012, 11:28 PM   #71
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Originally Posted by wildo View Post
You don't want this happening to you...

Danger, Will Robinson! Danger!
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Old 02-02-2012, 01:48 AM   #72
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Quote:
Originally Posted by wildo View Post
We had a Miata rollover at an event due to a cracked wheel breaking. High g-load right-hander with sharp bump @ the apex, outside left-wheel sheared at the spokes. Post roll-over inspection showed that several of that car's wheels had small, hairline cracks.
You're going to tell us this story without telling us what wheels he was on?!?
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Old 02-02-2012, 07:34 PM   #73
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+1. You don't want this happening to you...
Woah! What a picture! Do you know the story behind that? What wheels/car etc. ?
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Old 02-02-2012, 09:01 PM   #74
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Its on a car during a rally, Breaking wheels isn't unheard of in such situations.

The car looks to be an EVO, EVO VII I believe
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Old 02-03-2012, 01:14 PM   #75
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You're going to tell us this story without telling us what wheels he was on?!?
They were one of the 15x6" OEM wheels that came on a certain 1994-1997 special package/edition. The owner said that after his rollover, he turned to the internet and found that these wheels were known to have cracking issues, but this was the first I've heard of it.

No "before" picture, but here's an "after".

PS. Hard Dog roll bars freakin' WORK! Driver walked away. First day wearing his HANS.





Wheels for Racing-brokenwheel2.jpg Wheels for Racing-brokenwheelaftermath.jpg
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Old 02-03-2012, 01:20 PM   #76
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they look like regular old NB 15x6s. The only other 5 spoke 15x6 was the enkei and the center doesn't look the same at all.




If you remove the center cap from the NB 15x6 (second picture), its pretty obvious. Matter of fact, I got a set sitting in my garage right now lol.

Plus the lip on the enkeis is concave down, while the lip on the broken wheel is concave up (NB style).
Attached Thumbnails
Wheels for Racing-96m.jpg   Wheels for Racing-99-15.jpg  
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Old 02-03-2012, 01:34 PM   #77
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+1 for the above being an NB 15x6. I'm running those with SDrives right now for rain. Good to know they go pop...

I've read the easiest way to check for a cracked rim (other than visual inspection or phosphorescent dye) is to pull the tire off and lightly rap the rim with wooden object, like the handle of a hammer. If it rings like a bell, good to go. If it buzzes or clunks (or does anything other than ring) you should probably discontinue use. Any comments or other quick tips?
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Old 02-03-2012, 02:31 PM   #78
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I can't say its common knowledge that the NB wheels crack or break. I will admit they are the lightest of 15x6 wheels, not really causation, but it could be a factor.
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Old 02-04-2012, 02:13 AM   #79
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A local friend with an NB1 that gets autocrossed on the OEM 15x6 alloys with 205/50 street tires has cracked three of her wheels. Safe to say that that particular OEM wheel style was a little too light.
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Old 02-04-2012, 09:43 AM   #80
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Originally Posted by emilio700 View Post
A local friend with an NB1 that gets autocrossed on the OEM 15x6 alloys with 205/50 street tires has cracked three of her wheels. Safe to say that that particular OEM wheel style was a little too light.
thats kinda scary, I have been on track too many times on my NB 15x6s to be comfortable with that statement, I think I might go clean them and check them for cracking. don't want to sell a death trap.

I am surprised though, I couldn't find a lot of comments about this.
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