New Kumho's coming

[singletrack1]

See below for details. This is all that is known at the moment...


new kumho pictures

kumho test details

BTW - I just saw some 205/50/15 A3S04's at the track. A set for a contract driver for the run-offs. Still very light and they changed the grooves to be symetrical. The wear holes are now only at the edges of the tread. Very wide for 205's...

[SI///M3]

Interesting. I'd like to see some more info on those. In a month or 2 I'm gonna order some r comps for next seasons autocrossing...

[frayed]

Boooinnnng.

Cheaper, faster, and more consistent than Hooters? That would be nice. . . if I ever get back to the track again to burn up these Toyos.

[Erik@EDGE]

Hot damn! They look mighty interesting...They should be out about when my current Victos are toast....

[jmciver]

If the new Khumo's live up to what they advertise, it seems Hoosier will have to re-evaluate it's pricing (ya gotta love capitalism : !!).

On a side note, how do the weight of these tires compare to the Hoosiers since the Hoosiers are a noticably lighter tire? Also, what other sizes will be available?

[ChewToy]

Guys have some v700's for sale. 235x40x17's if anyone is interested.

[Jim O.]

Hmmmm...without any grooves, these new Kumhos are going to be really interesting in the rain. Damn, guess that means that I'm going to have to have a set of MX's for really heavy rain with standing water, a set of full-tread Victoracers for rain without standing water, and these new ones for the dry....

As opposed to a set of Hoosier Dirt Stockers for the heavy rain, and a set of A3S03's for the dry, and slip-n-slide ugliness in between...

Jim

[TeamZ4]

be aware that the new Hoosier S04 is coming next year too, and they are claiming increased performance over the S03. A grooved S04 rain tire version will also be available.

[Akakubi]

Kumho is getting serious. It's indeed great to see some competition to the Hoo-Hoo's. I wonder how they would wear compared to the Hoosier's?

[John in Houston]

Originally posted by TeamZ4
be aware that the new Hoosier S04 is coming next year too, and they are claiming increased performance over the S03. A grooved S04 rain tire version will also be available.

Mark,

Has hoosier said anything about the weight of the new S04? Was wondering how much they picked up going to steel belts over fiberglass?

[melmyers12]

That tire is sweet!

I'm not in a position to buy any right now, but they look awesome!

BTW - John in houston. That pic is sweet. you need to work on your suspension setup though..

[B.Watts]

When we were running the old Gruppe N Bilstein setup on both my old 325 and my dad's HPrepared LTW, we had some great pictures of both cars carrying the inside front all the way through the right hander of Hogpen at VIR. It was pretty cool to see at something like 70-80 mph.

[Jim O.]

What's also interesting is that Hankook has released an R-compound tire in the US. And Yokohama has the soft compound - if they ever do what has been rumored for a few years and bring over the R-tires that they have in Europe, maybe they'll be a threat again.

The Toyo RA-1 seems like it's been out for ages - maybe it's time for Toyo to come out with an update. Haven't heard anything, but you can always hope.

Then there's the Michelin Pilot Sport Cup. Too bad it doesn't do very well for autocross, but I've heard it's a great track tire.

Just think - if we had 5 or 6 competitive R-tire choices! Maybe having so many choices would drive some of the prices down...

Jim

[John in Houston]

Originally posted by melmyers12
BTW - John in houston. That pic is sweet. you need to work on your suspension setup though..

Yeah... the setup is being worked on... but my math skilz be lacking (your other post on wheel rates, etc ):

If you look closely at the photo, there is actually a 'fault-line' running through there... and that, along with the tires / grip / cornering is what gave the lift such height. Usually it's just a little air.

650# springs going in the rear tonight. More tuning Sat & Sun at the practice before SCCA Solo II finals.

[John in Houston]

Originally posted by Jim O.
Just think - if we had 5 or 6 competitive R-tire choices! Maybe having so many choices would drive some of the prices down...
Jim

It would be like the old days... BFG (R1), Yokohama, Kumho & Hoosier.

[melmyers12]

Originally posted by BMWRacerITS
When we were running the old Gruppe N Bilstein setup on both my old 325 and my dad's HPrepared LTW, we had some great pictures of both cars carrying the inside front all the way through the right hander of Hogpen at VIR. It was pretty cool to see at something like 70-80 mph.

Yup, mine too.

too much sway bar, not enough spring

[melmyers12]

Originally posted by John in Houston
Yeah... the setup is being worked on... but my math skilz be lacking (your other post on wheel rates, etc ):

If you look closely at the photo, there is actually a 'fault-line' running through there... and that, along with the tires / grip / cornering is what gave the lift such height. Usually it's just a little air.

650# springs going in the rear tonight. More tuning Sat & Sun at the practice before SCCA Solo II finals.

I did see that pavement transition line. Good luck, it might behoove you to test the setup at a race track (with temps), then take it to the autocross comps..

[John in Houston]

Originally posted by melmyers12
I did see that pavement transition line. Good luck, it might behoove you to test the setup at a race track (with temps), then take it to the autocross comps..

Yah... if I had time! The 650's should bump the rear spring rate enough to:

1. counteract the understeer caused by the surface in Topeka
2. Reduce the inside front tire's tendency to pick up

I've also got adjustable sways... so I can dial in more if need be. I'll also be bringing 525#, 600# and I think 700# springs (on another car)... so there will be tuning options available.

My biggest issue right now is that the car is amazingly neutral. I really hate to mess with the settings right before Nationals... but the surface difference up there will most likely require it. Temps are even across the tire for the current setup / tire pressures (skidpad tested)

[B.Watts]

Originally posted by melmyers12
too much sway bar, not enough spring

Hell, we were running 1000F and 1200R on dad's car. I was closer to 680F and 850R I think.

[melmyers12]

If you have adjustable shocks, tighten up on the rear compression, I would say tighten up on the front rebound, but that doesn't help when your wheel is off the ground!

[John in Houston]

Originally posted by melmyers12
If you have adjustable shocks, tighten up on the rear compression, I would say tighten up on the front rebound, but that doesn't help when your wheel is off the ground!

Rebound is done. Only have SAs... so Compression (as if it mattered) is outta my control.

edited for stupidity

[Geo31]

Originally posted by John in Houston
Compression is done. Only have SAs... so Rebound (as if it mattered) is outta my control.

Huh? If these are single adjustables, I can almost guarantee you they are rebound adjustable. Rebound is far more important than compression.

[stjobs]

Koni SAs are only rebound adjustable. That's the more important adjustment by far, as George said.

[Erik@EDGE]

SAs are only rebound adjustable

[John in Houston]

Wait... are the SAs rebound adjustable : ?

Yeah guys.. got it... phucked up. Glad to see that 3 of you were on the ball.