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Old 08-28-2005, 04:16 AM   #1
psaeko
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Default Kumho MX experience anyone?

I'm debating on tires since my es100 is almost out.

I'm ready move on to something better and were considering Kumho MX, G-Force KDW 2 or Bridgestone RE750.

Anyone have experiences with above?

any comments are welcome.

Thanks


btw i'm getting 215/40/17 size
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Old 08-28-2005, 06:19 AM   #2
BlackEyeII
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Yep I just got a call yesterday that my Kumho MX's were in at the local shop.

My ES100's are dead as well...225/45/17's

Everything I read has been good about them, so I went for it. Also, according to tirerack.com they are 2lbs lighter per tire than the ES100's.

However this is partially due to the fact that they only have a 9mm tread depth vs. 10 on the ES100's...

Still sounded like a great tire for what I want. Hipo street/ occasional HPDE / Cost...

I will let you know how they work out...

Experience:

ES100's = Owned 2 sets, they wear long but die on the track

KDW-2's = Read some bad reviews that they were SUPER noisy. No firsthand exp.
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Old 08-28-2005, 09:37 AM   #3
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215/40/17 kumho MX @tirerack $119 each + shipping

for $5 more u can get the Azenis RT-615 at tires.com with free shipping, or $15 less and get the hankook R-S2, both have better traction than the MX.
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Old 08-28-2005, 04:34 PM   #4
Thingfish
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I have run the MX tire. Very good traction dry and surprisingly good in the wet, better then the ES. The only issue I had with them is sidewall bulges. The roads out here are crap , and they took their toll on the Kumhos sidewalls..
Hankook tires are garbage..nuff said there.. The 615's we put on the STi are horrible in the wet ( any standing water ),but astounding in the dry.
The tire I recommend would be the KDW from BFG, one of my favorite tires all around.
I took off ES and put on KDW's on my Cobra and could not have been happier.
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Old 08-28-2005, 05:47 PM   #5
psaeko
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Quote:
Originally Posted by BlackEyeII
Yep I just got a call yesterday that my Kumho MX's were in at the local shop.

My ES100's are dead as well...225/45/17's

Everything I read has been good about them, so I went for it. Also, according to tirerack.com they are 2lbs lighter per tire than the ES100's.

However this is partially due to the fact that they only have a 9mm tread depth vs. 10 on the ES100's...

Still sounded like a great tire for what I want. Hipo street/ occasional HPDE / Cost...

I will let you know how they work out...

Experience:

ES100's = Owned 2 sets, they wear long but die on the track

KDW-2's = Read some bad reviews that they were SUPER noisy. No firsthand exp.
Great! Please let me know of your opinions when you put it on

Only negative comment I've heard about MX is soft sidewalls thus far
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Old 08-28-2005, 05:48 PM   #6
psaeko
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Quote:
Originally Posted by ommmjido
215/40/17 kumho MX @tirerack $119 each + shipping

for $5 more u can get the Azenis RT-615 at tires.com with free shipping, or $15 less and get the hankook R-S2, both have better traction than the MX.
Yeah I was considering Azenis but dropped from my list due to tread wear and unpredictable wet condition handling. But I know it has one of the best dry traction.
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Old 08-28-2005, 05:51 PM   #7
psaeko
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Quote:
Originally Posted by Thingfish
I have run the MX tire. Very good traction dry and surprisingly good in the wet, better then the ES. The only issue I had with them is sidewall bulges. The roads out here are crap , and they took their toll on the Kumhos sidewalls..
Hankook tires are garbage..nuff said there.. The 615's we put on the STi are horrible in the wet ( any standing water ),but astounding in the dry.
The tire I recommend would be the KDW from BFG, one of my favorite tires all around.
I took off ES and put on KDW's on my Cobra and could not have been happier.

I am considering KDW because i don't really care about noise level since my suspension setup produces enough NVH already.

Sidewalls of MX is an issue I've been hearing. Can you brief me further what happend to your set of MX?
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Old 08-28-2005, 10:07 PM   #8
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I had the MX's....and HAVE the Z212 Hankooks....and the Hankooks are, in the first 3k miles, as good or better than the MX's.

The MX's like a lot of pressure.....don't even THINK of running less than 36psi.....I think THAT is one reason some people have issues....they try to run them just too damn soft and get tire dammage as a result....and poor overall performance as well.
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Old 08-28-2005, 10:59 PM   #9
Thingfish
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The MX's I had bulged the sidewalls from a square edged bump from construction, it caused large ballons to grow from the sidewall, and eventually seperated the tread.
I do not remember the pressure it happened at , however they Do like a bit more pressure. Mine were set by chalk scrub, and tuned by temp across the tread face.
I tried a set of Hankooks, and after watching the tire place try to balance them.... I decided on another tire.. I have nothing to say about their performance, as they never made it to my car.
To be frank, IMHO the BFG's are superior to the MX, in every way.

Scotty, I think your pressure opinion is spot on with MX's, too little pressure = too much heat, and no casing support.
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Old 08-28-2005, 11:03 PM   #10
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...one of my Hankooks ballanced out without any weight at all an another balanced with one 7g weight on my SSR's....none tool more than 21g....that said.....I would run either tire, anytime.....the MX's do not come in a 235/40 which I am liking a lot over the 225/45.....that little bit of gearing change is great, IMO.
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Old 08-28-2005, 11:18 PM   #11
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Good deal with the lucky weights, my gamble did not pay off so well.
Yeah, 6/10th's of an inch shorter tires would make a noticeable difference.
I run RE070's now, and dread the rain... but if we get 3 inches a year , it was a wet season.
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Old 08-29-2005, 04:21 PM   #12
BlackEyeII
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Default First MX Impression (Soft)

Well I just got the MX's on about an hour ago. I drove home from the tire shop and swerved around a bit, and pulled right in to a gas station and put more air in.

I checked the pressure and they were at 32psi from the tire shop! Bastards think my suby is an SUV or something...

Anyway after reading the sidewall and seeing 51PSI max I brought the fronts up to 46psi and the rears to 42PSI.

They feel better now but still real soft compared to my nearly bald ES100's.

I can do the "tire flex dance" at 40-50mph where you move the wheel left and right and the tire never quite catches up before you move it again, I really hate that...

But, the rubber is fresh and soft and after they harden a bit and wear down some I think they will be fine.

What do you guys think, can I run more pressure? 50psi in front and 45 in back?

Granted they are brand new and soft, but they ride very nice and are perfectly quiet.

FYI: Suspension= Prodrive Springs/Koni inserts, Whiteline ARSB on full stiff, Hotchkiss 25.1 Hollow FSB, Kartboy rear DL's, Noltec Front DL's..

Sebring in OCT. will be the real test. Willow Springs, CA killed one set of ES100's in two sessions, it was my second set that I just took off. I am hoping the MX's will survive my right foot at Sebring.
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Old 08-30-2005, 12:20 AM   #13
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Run a line of chalk across the face, drive some hard corners and look at the pattern. Adjust pressure till it wears evenly.
50 psi is rediculous...... It will kill the center of the tire, and give a crap contact patch.
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Old 08-30-2005, 01:04 AM   #14
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Quote:
Originally Posted by BlackEyeII
... about an hour ago. .....

...man...ya gotta give 'em 1k miles or so....and when they get under 1/2 worn they REALLY rock, dry....and try 41F/39R or a pound or so either way
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Old 08-30-2005, 08:17 PM   #15
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I put a set of 225-40-18 MX's on late last year. For the money, they have been awesome. I was initially concerned after hearing about the "soft" sidewalls, but in the 40 series they seem pretty damn stiff.

For anyone recommending the Azenis...I hope their new compound ages better than their old one. After a year of autocrossing and daily driving, my old Azenis were hard as rocks. Had to dump them...
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Old 08-30-2005, 08:33 PM   #16
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Quote:
Originally Posted by zoomfactor
I put a set of 225-40-18 MX's on late last year. For the money, they have been awesome. I was initially concerned after hearing about the "soft" sidewalls, but in the 40 series they seem pretty damn stiff.

For anyone recommending the Azenis...I hope their new compound ages better than their old one. After a year of autocrossing and daily driving, my old Azenis were hard as rocks. Had to dump them...

...same happened to mine....damned rocks after 15k miles
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