Hoosier Koni Grand Am Series Race Tires

[jpjp]

If anyone is interested, I have access to used race tires. These tires that have been used for only 1-4 heat cycles.

I have been doing this for about 8 years now on bimmerforums, M3Post, and M3forums (JPJPJP) if you need references.

User name is JPJP on the other forums.

Please read the last post for the latest inventory.

Tons of tires and sizes

www.usedracingtires.com

JP

Jphglobal1 at gmail.com

***Email me at jphglobal1 at gmail to get on my mailing list

[cosM3os]

What EXACTLY are these tires? Slicks? R6? A6? We (I) need to know what model so I know I'm running something legal for my class.

[Cory M]

They are an endurance tire, similar to the R6 but longer lasting with less grip, I don't believe they are DOT approved if that matters. Good DE tires, not great race tires.

[jpjp]

They have a tread design but they are usually shaved so you can faintly see them. They do not have groves like the R6 tire so I would say they are more of a slick. I believe that they were used in Grand American Cup, Rolex Series, 2008 Grand American Koni Challenge Series.
They are not DOT designated.

I used them for DE events so I never got into the rules and regs of what you can and cannot use. So I hope this helps.

I will try to snap of picture of one.

[onasled]

I don't think they are as sticky as the R6. Yes, they are a full tread rain tire shaved down to almost slick status.

[Gleb]

The Grand-Am/Koni spec Hoosiers ARE faster than R6, that's a fact.

[Carthusiast]

I don't think they are as sticky as the R6. Yes, they are a full tread rain tire shaved down to almost slick status.

That's certainly not an endurance tire. Any rain, even completely shaved will go out incredible fast. Compound is to soft for prolonged dry use.

[smeyer1116]

you can look these up on the hoosier web site. they are $230 new each in that size. the web site lists both drys and wets, but does not have any information on configuration. i would call hoosier to get that

[B.Watts]

The Grand-Am/Koni spec Hoosiers ARE faster than R6, that's a fact.

I've actually heard the opposite from folks who have driven both. And it would seem to make sense that a tire designed for an endurance series would be slower. Is there some documentation from Hoosier that the Koni tires are indeed faster?

In the end, it doesn't matter much for club racers since the tires won't work in DOT tire classes.

[Gleb]

I've actually heard the opposite from folks who have driven both. And it would seem to make sense that a tire designed for an endurance series would be slower. Is there some documentation from Hoosier that the Koni tires are indeed faster?

In the end, it doesn't matter much for club racers since the tires won't work in DOT tire classes.

Hoosier will never admit it officially, but it's true (I was even told that by a Hoosier rep at Daytona at the beginning of a Grand-Am/Koni season). I've also tried them back to back and Koni specs were 2-3 tenths faster. Both R6 and "Konis" had two heat cycles on them, when I tested them.
Wets are the same though.
And as far as I know, you can't buy them anyway. They are only available to Grand-Am teams.

[jpjp]

I just learned that I can get 245/40/17 and rain tires as well which I think are 225/45/17. Price is a little higher but still a great tire.

[robertm]

The Grand-Am/Koni spec Hoosiers ARE faster than R6, that's a fact.

If you're talking about their endurance tire thats not true. There was a thread on these tires about a week ago btw. I've run them any they are a good 1-2 seconds slower than an R6. The ones I used were supposedly only previously used for qualifying.

[Cory M]

Unless Hoosier has drastically changed their GrandAM Cup tire compound and construction in the last year or two they shouldn't be faster than the R6. I have gone through about 10 sets of brand new Hoosier GrandAM Cup tires and none of them were as fast as new R6's, but they did last longer... It would be great if the new Cups are faster than the old ones and R6's, especially when Hoosier unloads their inventory at the end of the season for 50% off...

[BobWright]

Lots of ???????????????????????????'s on this thread.....

[Cory M]

Lots of ???????????????????????????'s on this thread.....

Probably because Hoosier changes compounds so often, we are all probably talking about different tires

[BobWright]

Yeah....just doesn;t seem like a bargain, if you don;t even know what the Hell you are buying....

[philsans5]

I bought 2 sets of close outs, took all season to cord. Initially, they aren't as sticky as an R6. yes I've run both back to back. The cup tires seemed to last all race much better, anything over 40 minutes and they were better. But, for a sprint, give me R6's.

[jpjp]

www.usedracingtires.com

JP

Jphglobal1 at gmail.com

[JClark]

Great DE tire. They stay consistent forever.

[Evergreen Dan]

... "Koni".

FYI: ";" is not a substitute for " ' " So, "doesn;t" is not the same as "doesn't"

FYI: periods go inside quotes. Sentences end in periods.

Sorry: Couldn;t resist* I"m a bad person^ Can"t spell or type either.'

Back to the tires: How much for a staggered set (2x 225/45-17 plus 2x 245/40-17)? I'm thinking that these might make a good investment for later in the season. I'd also be interested to know what the smallest recommended rim width is for the 245/40's is. Usually it is 8.5", and I have 8". Not even sure if they would fit as 235/40 is close on the outside. Might be worth $230 to try a non-staggered setup. If I have too much oversteer, I could buy a non-staggered 225/45 and make two staggered sets, although I would have to store one set for next season likely .

Does the period come before or after the emoticon?

[JClark]

Dan- Size/rim width info: http://www.hoosiertire.com/grandamc.htm

[Evergreen Dan]

Dan- Size/rim width info: http://www.hoosiertire.com/grandamc.htm

WOW. 8.5" is the min recommended size for 225/45-17. This is the stock tire size for the car and the stock rim is 7.5". I have 8". I'm thinking this would be fine but that 245 would be out of the question. Anyone disagree?

[jpjp]

www.usedracingtires.com

JP

Jphglobal1 at gmail.com

[JClark]

WOW. 8.5" is the min recommended size for 225/40-17. This is the stock tire size for the car and the stock rim is 7.5". I have 8". I'm thinking this would be fine but that 245 would be out of the question. Anyone disagree?

I've had the 225/40s on 8.5"s and 9"s. They'll fit on 8"s no problem. The Cup/Koni 225/40/17s are very slightly narrower than the Hoosier R6 245/40/17, so they run real wide.

[onasled]

I ask a friend, Randall Smalley, who owns the RSR race team, running three Mini Coopers in the Koni. He replied..
"Cup tires are a lot harder than the R6 . . . they are for endurance racing. It has been my experience that the tires are shot after 6 or 7 heat cycles. The R6 has more stick......"