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Old 03-18-2003, 08:46 AM   #276
Subdued
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Quote:
Originally posted by Carbon


This might be a strange question, but why did you choose Kumho MX's over Azenis Sports? I've heard a few comments on sidewall flexibility on the MX's....

BTW, you're running 245/40R17's right?
Yes I am. My decision was primarily based up on the availability of the MX in 245/40R17. I was aware of the MX's less rigid construction, but had read some good reviews of it's grip. I have not had a chance yet to drive them hard on a dry course. One thing I have been curious is how rigid is the BFG KD in overall construction.
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Old 03-18-2003, 01:29 PM   #277
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BFGs are pretty rigid. They seem as rigid as my Azenis. Some day in the future I'll get some MXs in 245/40-17 so I can compare those as well. They will replace my Azenis as my "real" street tire.
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Old 03-19-2003, 11:16 PM   #278
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Quote:
Originally posted by Dussander
BFGs are pretty rigid. They seem as rigid as my Azenis. Some day in the future I'll get some MXs in 245/40-17 so I can compare those as well. They will replace my Azenis as my "real" street tire.
I found this kinda interesting:

versus

versus

Obviously the Kumho isn't side-specific like the KD, and there's a lot to the construction internally that we can't see, but they're alot more similar in tread design than, say, the KD and the Azenis or the Goodyear Supercar.
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Old 03-22-2003, 01:52 AM   #279
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Upon closer inspection of my own new 245/40 17 Kumho MX tires, they look as if they will have much more tread in contact with the ground as they wear. 8" wide, 45 offset wheels, and some minor fender rolling, and they fit great. Their sidewalls are noticably soft when just pushing on them, but it's been raining here, and their grip is outstanding so far.

If you are going to stay with stock diameter struts, you should get a wheel with a higher offset. There's about 15mm of space between tire and strut.
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Old 03-22-2003, 03:55 PM   #280
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Sweet, you actually did it!

What wheels you be using?

How did you end up rolling the fenders? Baseball bat? I'm considering cutting the fenders instead to help prevent moisture from building up in the folded metal. Of course, that will involve some cutting...
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Old 03-22-2003, 04:51 PM   #281
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I used a bat because I was just too anxious to wait to have them professionally done, plus I'm low on loot. I used enkei rpf1 wheels. I wasn't a big fan of their huge lip, but they're growing on me. With the bathroom scale method, me on the scale holding wheel - me on the scale by myself = 15lbs and a fraction. Very light.
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Old 03-22-2003, 07:46 PM   #282
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Those are the exact wheels I was gonna get! Best price I could get was $1080 (out the door, i think)...

Yeah, they're rim rolled (semiforged) and light.

I like the phat lip, reminds me of some BMW wheels (not that I'm a bimmer fan... and not that I care how they look )

You said you got ~ 15mm of clearance to the strut... are you on stockers, or coilovers? I was thinking the money I save on the Enkeis versus the Volk CE28N can almost pay for a set of used Tein HA's.
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Old 03-22-2003, 07:54 PM   #283
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I'm on stock struts (for now) with tein springs, but I got these wheels in this offset so I'll have room in case I upgrade the suspension next year. I got the wheels from evolutions, who were very helpful. I would have gotten them from nino, who had attractive package deals, but I wanted them sooner than nino was getting them, and evolutions got them pretty quick.
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Old 04-03-2003, 06:44 PM   #284
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Default Not 245's, but close...

New wheel/tire setup here. I'm not going to be running in STX anymore, but just upgraded my street tire setup anyways. I figured some might be interested in this wheel due to its size.

Wheel is the new Enkei RPF-1 in 17x8" ET45. Weight of wheel alone is 15.5 lbs according to Enkei Japan WWW. Comes with hubcentric centering rings and aluminum stems. caps are extra. My tire is 235/40/17 SO-3 (not going to experiment with 245 just for street duty).

Here are some pics. My rear camber is set to -1.9 deg. and rear is lowered less than 1" with my GC/Koni setup. I have not mounted all 4 wheels yet so i can't comment on fitment, but i don't expect any problems.

Click pics for larger versions



Last edited by Cosworth; 04-07-2003 at 12:59 AM.
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Old 04-05-2003, 12:29 AM   #285
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Looks sweet! I'm in japan right now and these Enkei RP-F1 is really popular.
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Old 04-07-2003, 01:06 AM   #286
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Ok, i got the stuff on and checked out. All is clear with respect to not rubbing. Fit is great and grip is as well. Here are some pics of the clearances and such. For reference, i run about -2.0 degrees camber front and rear. Hope this proves useful to someone out there.


Front tire/strut clearance



Rear tire/strut clearance


Misc shots:



Last edited by Cosworth; 05-28-2003 at 10:04 PM.
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Old 04-22-2003, 04:26 PM   #287
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Anyone else run the Kumho MXs in an AutoX yet? I think they suck. Sidewall way too soft. I was running 50lbs in the front and still rolling over. Granted, this was with a bad wheel bearing, but still. I'm curious to what other people think.
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Old 04-22-2003, 04:35 PM   #288
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I'm going to try to at the next autox here. I have my One Lap tires on the car and need to break them in a little bit before I race them at Watkins Glen.

Hopefully the low slip angles of road racing, will not cause them to roll over on me at the track.

-Tom
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Old 04-22-2003, 04:37 PM   #289
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Quote:
Originally posted by Dussander
Anyone else run the Kumho MXs in an AutoX yet? I think they suck. Sidewall way too soft. I was running 50lbs in the front and still rolling over. Granted, this was with a bad wheel bearing, but still. I'm curious to what other people think.
I heard the sidewall was on the soft side, but this sounds excessive.

I was going to try, but I started looking at the 225/45/17 azenis again. It has a 9.1" sectional width to the MX's 9.9" sectional width. The diameters are similar too with a 24.9" diameter for the azenis and a 24.8" for the MX.

Right now I am getting my butt handed to me by a BMW E30 M3, driven by a very good driver (autox'ing since '87) so I don't feel so bad. But I do have these other WRX's nipping at my heels running azenis (215/45/16's). So the question of the day is, is the extra width worth it?

I don't know. If it was I would expect better performance than I have achieved. The tires I have now don't have the same grip levels that the azenis tires do, and that's hurting me in the sweepers.

I am due for a new set of tires soon, and it does not look like the MX will be the next tire for me.
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Old 04-22-2003, 09:03 PM   #290
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Quote:
Originally posted by Dussander
I was running 50lbs in the front and still rolling over. Granted, this was with a bad wheel bearing, but still.
You said you were getting some MX's as your real street tires... are these the 245/40 MX's you were talking about?

My real question is: why do you have a bad wheel bearing on your WRX already? :O Do you think it's related to running 245s, the stress of autocrossing, or just bad luck?
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Old 04-23-2003, 12:30 AM   #291
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Quote:
Originally posted by ChrisW


I heard the sidewall was on the soft side, but this sounds excessive.

I was going to try, but I started looking at the 225/45/17 azenis again. It has a 9.1" sectional width to the MX's 9.9" sectional width. The diameters are similar too with a 24.9" diameter for the azenis and a 24.8" for the MX.

Right now I am getting my butt handed to me by a BMW E30 M3, driven by a very good driver (autox'ing since '87) so I don't feel so bad. But I do have these other WRX's nipping at my heels running azenis (215/45/16's). So the question of the day is, is the extra width worth it?

I don't know. If it was I would expect better performance than I have achieved. The tires I have now don't have the same grip levels that the azenis tires do, and that's hurting me in the sweepers.

I am due for a new set of tires soon, and it does not look like the MX will be the next tire for me.

chris w:
wait, are you saying that you already have the MX's, and they aren't as sticky as your falkens? or are you saying you were thinking of looking at the MX's in 245's but decided not to?

anyone else with mx's:
thanks for the opinions, keep 'em coming!
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Old 04-23-2003, 01:44 AM   #292
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Quote:
Originally posted by Dussander
Anyone else run the Kumho MXs in an AutoX yet? I think they suck. Sidewall way too soft. I was running 50lbs in the front and still rolling over. Granted, this was with a bad wheel bearing, but still. I'm curious to what other people think.
I have run my MX's at two dry and one wet event so far. I am running 47lbs up front and have not been rolling them excessively. That is including some beautiful sweepers with mass understeer. I have rolled them over to the triangles, but that is pretty much what I expected. This is with a measly 1.5 deg camber. I was very concerned with the fact that the Kumho's are so much softer in the sidewall than the Falkens, but then I also realized that the Falkens are also stiffer than the Hoosiers. I have not run any other sticky street tire on this car, so I can not make any direct comparisons. If someone is able, I would love to see a side by side comparison of the MX and the Azenis.
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Old 04-23-2003, 07:51 AM   #293
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Quote:
then I also realized that the Falkens are also stiffer than the Hoosiers
bwahahahaha Are you sure you meant to say it this way

-Tom
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Old 04-23-2003, 08:40 AM   #294
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Quote:
Originally posted by trhoppe
bwahahahaha Are you sure you meant to say it this way

-Tom
It was late, other than poor grammar what is your point?
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Old 04-23-2003, 08:42 AM   #295
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You said that the Falkens have a stiffer sidewall then the Hoosiers. I was wondering if you meant that or the other way around. The Falkens are about as hard as a soft wet sponge compared to the sidewall of a Hoosier.

-Tom
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Old 04-23-2003, 08:51 AM   #296
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Quote:
Originally posted by trhoppe
You said that the Falkens have a stiffer sidewall then the Hoosiers. I was wondering if you meant that or the other way around. The Falkens are about as hard as a soft wet sponge compared to the sidewall of a Hoosier.

-Tom
You really think the Azenis have a soft sidewall? These tires have very stiff sidewalls. They are not nearly as stiff as a BFG R1, but then again neither are the Hoosiers. I expected Hoosiers to be stiffer then they were off the rim.

Since I have your attention, how did your KD and Rota combo fit with the Tein's?
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Old 04-23-2003, 09:04 AM   #297
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I can actually jump up and down on an unmounted hoosier and not have the tire bend one bit. Try that with an azenis

They fit, but oh so close, I can squeeze 2 credit cards between the strut and tire, so about 2mm clearance.
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Old 04-23-2003, 09:27 AM   #298
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Quote:
Originally posted by trhoppe
I can actually jump up and down on an unmounted hoosier and not have the tire bend one bit.
I must have you confused with some bigger gentleman.

Sorry, I couldn't help myself.

How much camber adjustment can you get with the Tein's not including a camber plate?
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Old 04-23-2003, 09:39 AM   #299
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Quote:
Originally posted by trhoppe
I can actually jump up and down on an unmounted hoosier and not have the tire bend one bit. Try that with an azenis

They fit, but oh so close, I can squeeze 2 credit cards between the strut and tire, so about 2mm clearance.
Tom... I've sat on my 225/45s with hardly a deflection.

--kC
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Old 04-23-2003, 09:49 AM   #300
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Quote:
How much camber adjustment can you get with the Tein's not including a camber plate?
Not really any. If you do, you rub

-Tom
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