The big question is why is the Hoosier 13x7" tire in third place?? It was only the tire used by all top five finishers last year in detroit!

Well, it's not in 3rd place any more

Check It Out

That's 21 teams registered, and almost all have indicated "the check is in the mail". I'll update it again when I hear from Doug Milliken on the finance side of things.

Thanks to everyone for joining! And as a reminder, we have to receive your money by April 30th for your votes to count. You can still join and get the data after that date, though.

I guess its time for a little rable rousing...Denny's gonna hate me for this...

I just took a look at the graph and I'm a little disapointed to see that the 10's are lagging behind...testing two hoosiers and a set of goodyears within a 1" width range seems like a waste of money...I know, I know...different compounds...but still...

If we're only going to get one shot at this it seems like the smart thing to do would be to get the broadest (albeit fuzzy) picture possible so that we don't end up with the 10" tires remaing a total unknown...

WWU, UTA and the rest of the schools interested in 10's, if you'd just consolidate your votes and settle on one brand you could sneak a 10 into the test...

-Travis Garrison

I agree, Travis. I'd recommend Hoosiers if people want 10's tested. We've done back-to-back testing of Hoosier and Goodyear 13's, and the compound difference is a big deal, especially in colder weather. We did skidpad runs with a sweep of camber and pressures, and the Hoosiers had the top 75% of the lap times.

Feel free to send me adjustments to your voting.
-Denny

That is what I was trying to do by throwing all of our votes to the Goodyear 10". It was in the lead already.

Can I talk anyone else into switching votes to the Goodyear 10" with us?
UTA, Tennessee Tech, Dartmouth, UIUC - would you guys be willing to switch from the Hoosier?
How about some of the teams with votes for Avon? Those seem kind of wasted now.
How about some of the teams that have multiple votes for the Hoosier 20x7-13 (Auburn, Cornell, Cal Poly Pamona). That one is clearly in the lead now so what's it hurt to help out the 10" cause.

If it comes down to it we would switch our votes to the Hoosier just to get a 10" in the test (some 10" data – even if it is Hoosier – is better than none).

Denny,
I know that you guys are confident that the 13" Hoosiers are better but I don't want to assume that makes the 10" Hoosiers better. That's the point of the testing.
But beggars can't be choosers.

So, who's with me?

I don't think construction differences can overcome the compound advantage Hoosiers have. The R25A compound is used on every modified-class autocross car I've seen; check out last year's A-Mod results at Nationals:
http://ww2.scca.com/soloresults.php?ID=81

The BM, CM, DM results are the same; 90% Hoosiers, with Goodyears at the bottom if present.

What makes you lean toward the Goodyears?

If you guys want to test 10" Goodyears, that's fine, it's just not where my votes are going

I know exactly why we choose goodyears when I was there...the sidewalls were supposed to be stiffer and the goodyear compound was relatively new and from what we had heard much soft/stickier...that and the profile is slightly narrower (don't ask).

But I think Denny is right...the Hoosier's are probably a better bet...

-Travis Garrison

We currently run the 18x7.5x10 hoosiers and i know from talking to jeff speer that they changed the construction of the 10's to the c2000 spec. He says that it's a kevlar belt vs. nylon therefore much stiffer. After the competition we purchased a set of r35 c2000's. we were running the r25a's of the old construction before that. We actually saw an improvement in our friction circle of about .2g's after switching to the r35's. We haven't had a chance to switch back to r25 c2000's to see if they also perform better. I am still quite puzzled, as i would expect the performance to drop off with the harder compound. oh well, we didn't even vote for a 10" tire for testing. I guess if enough teams sign up we might find out the answer.

We are still waiting on approval but it is almost done. Our school moves at a snails pace. Once we do get it(before the deadline) we are gunna put 4 votes on the hossier 18x6-10. I hope to hell we get these tested because who the hell uses goodyear anyway.

It's starting to look unlikely we'll get our payment processed and through to you guys before the deadline, so it will have to follow in a week or so and not influence the votes. However, we're trying to choose between 10s and 13s for next year and want data! With things as they stand, we would be putting all four votes on a 10" Hoosier, ideally the 6", if we got our money there in time.

I can confirm/reiterate what Marshall says about tyre construction, having heard it from Hoosier's UK importer. The new kevlar structure on the 10s, which they only used to use for their 13" tyres, is meant to be much stiffer than the old construction.

Hi all,

I've been following the discussion regarding voting for tires. I'd just like to reiterate that our intention is to provide at least some data on all the "popular" tires. The more teams that sign-up the more funding we'll have to get more data on more tires. While we will have limitations, we'll do our best to provide as much data as we can. We will definitely be testing at least one 10" tire. At least four different tires will be tested--and likely more than that. Denny, Dr. Woods and I have had discussions about how to get the most data on the most tires. Calspan TIRF is supportive of our testing and will help where they can. While it's inevitable we're not going to make everyone happy, the vast majority of you should be pleased with the results.

Thanks for all your support to this point. As the deadline for registration with voting rights draws near hopefully we'll get even more teams on-board. I'll be meeting with TIRF in early May to start detailed planning of the tests based on the finances available.

Less than a month until competition in Detroit. Good luck to everyone!

Edward

I'm just trying to keep this one near the top. It would be nice if we could make it permanently stay at the top (sticky?).

I don't really have any attachment to the Goodyear tires. I'm just interested in them because they're what we have now – (thanks to Travis). If Rob's votes come through in time we'll probably switch to the Hoosier.

Denny, interesting results there with the skidpan testing. We're yet to do a serious Hoosier test, but the Goodyear can produce incredible results in some conditions that would take some beating. Were you doing that test on the Hoosier 20x7?

Cheers,
Nick

Nick,
Yes, the test was Hoosier 20x7-13 R25A vs. Goodyear 20x6.5-13 R065. The weather was around 60 degrees F, maybe colder. It was a couple years ago, I don't remember that well

We have been able to overheat the Hoosiers in 80 degree weather, and I think the Goodyears might do better in those conditions. The Hoosiers just don't like getting over 140F or so.

Denny,
Thanks for that. I doubt the Goodyear compound is any better at higher temps, we've found them a difficult tyre to look after in an enduro setup. The compound is too picky, wears rapidly if you get anything wrong and sometimes the wear bars are cut a little deep. We had a great day chasing a changing balance that got traced back to a tyre that ran out of rubber but still looked like it had a fair bit left. The problems are as much construction issues as compound, but if you get everything right it seems to work pretty well.

Our payment should be "in the mail" as soon as this afternoon, so I hope that means our preferences get included...

Cheers,
Nick

I've received about 10 more registration forms, but I'm crazy busy at the moment. I'll update the spreadsheet this weekend, hopefully.

...and Doug Milliken is out of town for a few days so payment information will not be updated right away either.

If you have any questions regarding payments please let me know.

Edward

OK, I've updated the registered teams spreadsheet again:

Clicky Clicky

Looks like the 10" votes are still split between Hoosier 18x6-10 and Goodyear 18x6.5-10. And, there is significant interest in the 20x7.5-13 Hoosiers and 20x8-13 Goodyears.

Hey Denny,

I answered your email and i will do it again here. We would like all 4 of our votes on the hoosier 18x6-10's.

OK, got those changes updated Rob.