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Old 02-05-2009, 08:53 PM   #1
wopdeeze
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Default Star specs vs Kuhmo XS vs something else??

Heres my pickle, im looking for new tires and i want to run 255 40 17s on my 17x8.5 et 45 advan rc IIs but i cant decide what tire to get. i have test fit a 255 on my car and im waiting for my camber washers for my rear dms coilovers. fenders are rolled and i think once i get the rear camber inline right now its -2.5 i figure i wont rub the tire on the strut. but what im really trying to figure out before i go and spend 600+ dollars on tires, how do these tires compare on the track? i have searched and got some info about the star specs being the best thing next to sliced bread but thats about it. curently i run pre owned 225 45 17 or 235 45 17 re070s and i have to say these tires are great on the circuit for time attack but does anybody have some real world experiance on these tires doing something similar? What can anybody tell me about the sidewall stiffness of the starspecs or the xs or falken azenas? do they compare to the 070s? looking forward to some info if anybody has some.
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Old 05-30-2009, 03:56 AM   #2
gr8r rex
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I am bumping this thread since I don`t feel like making a new one.

I need new tires for street/autoX and maybe a track day or two!
Size: 255/40/17

I pretty much narrowed it down to two tires the Z1 star specs and the Kuhmo XSs! Which of the two would you guys choose? Also, any other choices. Also remember this is somewhat of a "discount" tire

Thanks!
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Old 05-30-2009, 10:16 AM   #3
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whichever one ya can get cheaper

unless you are a nationals level driver in which case you would likely have sponsorship.....it is unlikely you would find the difference
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Old 05-30-2009, 10:40 AM   #4
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I would look in the stickies, Luke at the tire rack says the Kuhmo is better than the Dunlop. I would lean toward the Kuhmo XS, my friend has had good luck with them.
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Old 05-30-2009, 02:37 PM   #5
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Quote:
Originally Posted by Uncle Scotty View Post
whichever one ya can get cheaper

unless you are a nationals level driver in which case you would likely have sponsorship.....it is unlikely you would find the difference
That is pretty much what I figured! The Kuhmo XS I can get $20 cheaper per tire in the same size.

Quote:
Originally Posted by Quadsbc View Post
I would look in the stickies, Luke at the tire rack says the Kuhmo is better than the Dunlop. I would lean toward the Kuhmo XS, my friend has had good luck with them.
Good luck with them on a wrx or similar weight?
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Old 05-30-2009, 02:39 PM   #6
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a few months ago i was in the same situation. went with the kuhmo's and am very happy with 'em.
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Old 05-30-2009, 02:46 PM   #7
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the XS is highly rated at the moment
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Old 05-30-2009, 04:05 PM   #8
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XS. I've had them since November. The low price is a bonus. Super well-refined tire that has a slight performance edge on all the competition (regardless of price). XS is absolutely first rate.

Kumho overcame the sidewall stiffness issue in a unique way. The tire is lightweight (a traditional Kumho trait in their best tires) and the sidewalls are not as stiff as some other tires in this class. They did that by coming up with a sidewall that has flex calculated to maximize tread footprint. The symbol on the sidewall of the tire illustrates this feature. Look at the more rounded shoulders on the XS. No other tire in this class looks like that.

The inside tread looks like the chinese character for strength. I don't know how Kumho came up with that but it works.

Last edited by yzer; 05-30-2009 at 04:31 PM.
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Old 05-30-2009, 06:35 PM   #9
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I'm looking at a set of 235/45/17s.
The price is within $5 of each other, but the XS is so much lighter. In that size, it's 3 lbs lighter per tire. That is a lot
People pay big money for lighter wheels and then put on heavy tires.
Since all other factors are pretty close, I'm leaning to the XS tires.
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Old 05-31-2009, 11:22 AM   #10
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get the xs, save for a while and get the other, have an extra set for different feel weather etc. one could have a set for spring, summer, fall and winter, it's only money, something we let go of a little at a time (no matter how much your make).
when i sold homes, i showed families where going to the restaurants or 7 11 for snacks was the difference of a new home payment compared to renting.
same goes with cars, tires, new wheels or a few months of new video games.
you mentioned "leaning towards xs tires", go with the gut feeling and save for the other and enjoy both, even new wheels for them. drive safe.
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Old 06-01-2009, 02:17 AM   #11
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Kuhmos are best. Star spex suck.
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Old 06-01-2009, 03:22 AM   #12
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Quote:
Originally Posted by WRXHillClimb View Post
Kuhmos are best. Star spex suck.


bloody children
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Old 06-01-2009, 04:40 PM   #13
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Quote:
Originally Posted by WRXHillClimb View Post
Kuhmos are best. Star spex suck.
And the reasoning for this is.....?
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Old 06-12-2009, 11:57 AM   #14
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I decided to get the XS's! We`ll see how they do!
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Old 06-12-2009, 06:38 PM   #15
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Quote:
Originally Posted by gr8r rex View Post
I decided to get the XS's! We`ll see how they do!
how does the sidewall feel?
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Old 06-13-2009, 12:14 AM   #16
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Quote:
Originally Posted by WRXHillClimb View Post
Kuhmos are best. Star spex suck.

gtfo newb
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Old 06-13-2009, 02:27 AM   #17
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Quote:
Originally Posted by wopdeeze View Post
how does the sidewall feel?
Soft.... haha gonna need some pressure in these guys! I have a autocross Sunday of next week and I can let you guys know how it feels and pressures I`m running and such!
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Old 06-13-2009, 02:36 AM   #18
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I've been running mine the standby 39F/36R for DD and weekend road drives. Here they are last winter all new and smelling like rubber. You can still smell these after warm-up.

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Old 06-17-2009, 05:53 PM   #19
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I am debating between the same 2 tires right now. The only thing keeping the dunlops in the picture is that they are symmetrical so that they can be rotated when they wear unevenly....hmmm
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Old 06-17-2009, 06:29 PM   #20
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I wonder how the two would compare in the rain. The star specs have tread that will channel water away from the tire, while the XS has more of a dry style. Will the Star Spec out perform here? maybe but we all know that what works on paper doesnt always work as planned in the real world...

Ian,
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Old 06-17-2009, 07:34 PM   #21
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Quote:
Originally Posted by SlackerNJ View Post
I am debating between the same 2 tires right now. The only thing keeping the dunlops in the picture is that they are symmetrical so that they can be rotated when they wear unevenly....hmmm
? That means you can only rotate them front to back. The asymmetrical XS' can go on any corner.
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Old 06-18-2009, 12:32 AM   #22
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? That means you can only rotate them front to back. The asymmetrical XS' can go on any corner.
No...by removing them from the wheel and "flipping" them, you can turn that outside cornering wear to the inside of the wheel and get a fresh shoulder to wear off.

Think of it this way, the wheels stay on the car and you just swap the tires side to side, the tire is still rotating forwards but the outside is now the inside.
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Old 06-18-2009, 02:13 AM   #23
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Asymmetrical tires (XS) are less expensive to rotate and more versitile for rotation than directional tires. Directionals go front to back unless you want to pay the extra expense of remounting on the wheel. Asymmetrical tires (XS) offer more rotation options without remounting the tire on the wheel.
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Old 06-18-2009, 08:56 AM   #24
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I have not used the XS on my car but I do have star specs and I love them.
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Old 06-18-2009, 01:47 PM   #25
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Quote:
Originally Posted by yzer View Post
Asymmetrical tires (XS) are less expensive to rotate and more versitile for rotation than directional tires. Directionals go front to back unless you want to pay the extra expense of remounting on the wheel. Asymmetrical tires (XS) offer more rotation options without remounting the tire on the wheel.
I wish more people understood this. Especially on a performance summer tire, it means you can use it longer because you can wear it more evenly.
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