As for Hoosiers and wear, I don't think 1 track day will kill 'em unless you are unusually hard on tires. We ran a set of A-compound on the King car, and they were used before Laguna. They were subsequently run a couple times at Ginegerman, and they are still sitting in my garage with meat on them. I don't think they have any stick in them 'cause they are so old, but they still have meat.

I'd say you could get 2 weekends out of a set of Hoosiers (4 days) out of the R-compound set. And don't forget the new R3S04 is coming out and in talking to the Hoosier product mgr he was saying that by adding a steel belt they were able to drastically increase the life of the tire... so the newer Hoosiers coming out later this year will not be as expensive to run.

Your guys' Hoosier concern is well-founded, they are a fast tire that doesn't last that long. But I think you have handicapped them enough with just the 100pt. Someone could do a Hoosiers+Coilovers+Wing, but they would have no power adders. By using Kumhos+Coilovers+Wing+CAI+Wheels+Header+Exhaust I think you would be quicker than the Hoosier car. I just don't think they have the potential to spoil things like people seem to think. Again, keep in mind this is merely my opinion, though based on running quite a bit on both Kumhos and Hoosiers.

Another case in point... my driver's school at Daytona last summer I drove on both Kumho Ecsta and Hoosiers.... I think I was about .5 faster on the Hoosiers on the same car. So with the SV's current handicapping of the Hoosiers I think it's enough of a spread.

It sounds like we're right back where we started with the classing structure... and I'm at a crossroads on whether to build an Unlimited car and run Hoosiers or do a Mod car with Kumhos. Grr... Well, I've got the slight detail of a full autocross season to get through before doing anything, so I've got a little time to make a decision!

 

twohoos,

in my limited experience with both tires, I've found the multiplier to be between 4 and 5.

But, if you go off track or have a serious spin-out I noticed the Hoosiers can get ground down to the cord pretty quickly. So, if you take into account mistakes, the multiplier goes up even more.

Also, if your alignment isn't just right you'll fry the Hoosiers pretty fast, whereas with RA-1's and Kumho's mistakes aren't as costly and can sometimes be corrected before you've ruined the tire.

Hoosiers are just more touchy to deal with. RA-1's: you just sort of drive 'em.

dt

 

I have read that the longevity and performance of a tire can be significantly affected by the suspension set-up. Is it possible that on a tuned suspension like the King car the differences between Kumhos and Hoosiers in terms of both performance and longevity are less than the differences seen with a stock-suspension car? (Just a question for my education, not to complicate the debate )

 

[QUOTE]Originally posted by desert tortoise
[B] - JZR

...

JZR is at 100(hoosiers)+20(wheels)+15(swaybar)+25(shocks)+20 (wing) = 180.

 

How about these changes: (hoosiers go to 115, coilovers to 90, wing to 25).

Just to choose two nice looking setups with these changes:

Hoosiers + Penske Shocks + wing + front swaybar + wheels = 200 (seems like an autocrossers setup, or am I missing something?)

vs.

Spec Tire + coilovers + wing + intake + 20 more pts. = 200

 

Now this is my brain , this is my calculator , and this is the stocker trying to decide what mods to do to enter Pro-MOD


Kidding aside, this is actually a tough decision. I don't envy you Aaron as the governing body who has to lay down the final rules.

 

[QUOTE]Originally posted by rlaifatt
[B]I have read that the longevity and performance of a tire can be significantly affected by the suspension set-up.

 

Hmmm... I disagree... I still don't think Hoosiers should be more than coilovers. How about assigning a lower points value to each but stipulate no Hoosiers with coilovers allowed together. That would have the effect you are going for without choking down the amount of mods you can have.

I say leave the coilovers at 75, make the Hoosiers 75... and just outlaw that combination.

 

[QUOTE]Originally posted by Jason Saini
[B]

Hmmm... I disagree... I still don't think Hoosiers should be more than coilovers.

 

Hmm...

Flywheel, coilovers, intake, wheels... head spinning. I think I should just run unlimited.