the recent threads about tires got me thinking ...



i will continue to drive my car on the street, so for now i'm
looking for DOT-approved tires only.

1) Kuhmo's
+ the ECSTA V710 have a UTQG of 30 C/A
+ they only weight 18 lbs each
- they do NOT come in 225 size, only 205

2) Yokohama's
+ the A032R comes in 225 size
- they have a UTQG of 60 A/A
- they weight 22.84 lbs each

sooo, the question is, should i go smaller (205) but have a better UTQG or should i go wider (225) with a lower UTQG ???

or should i consider a completely different brand?

anyone?
Andy

The Kumho ECSTA V710 has been banned by the ORPCA, for solo and racing use, and I am sure it may banned in other regions.
I don't know if this will have any bearing on your selections???
CCLINTIRERACK

i know, but they're replacing them with a new model (same name/number). the stats that i posted are for the new tires that will be available soon ...


sooo, what about my question ????


Andy

is wider with less gripp better than smaller with more grip?

I'd say the 205/50 sized tire is going to be your best bang for the buck right now.

I'm like you I think, I want darn near the biggest tire that I can run, but the logical side rules that the added weight and rolling resistance and the gearing change of the 225/50 tire are too much to overcome with the current motor and driving skill.

IMHO, you'll be faster/quicker with the 205-50's than the bigger tires.

surface area X the stickeyness = ?

You would have to research how they came up with the UTQG rating

What's the difference in $

and one is 20% lighter

they're both on the expensive side of things ...

A032R's suck. super loud and not that sticky. I'd get some Toyo RA1's. they have 205/50/15's.

Last I heard, the 710 were gonna come out in late summer in the 225 size........that has prolly been put off till they get their problems solved.

You have 3 choices, IMO, Vracers and 2 kinds of Hoosiers (S03 & S04). 4 ea 225 Hoosiers are groana (pun) run ya
over 800 bucks.... The Kuhmos, around 600-650.

Vracers are good tires that wear well (for an AX tire),but they like negative camber....and lots of it, as do the Hoosiers.

The AX experts say the order of importance is:

1) driver
2) tires
3) alignment
4) suspension

Hi Andy,

If I had a vote, i'd say buy another set of cookies for $50 each, and buy the 225 kumho's. You can then put the auto-x tires on for the event, drive there and back, and still be "sticky". I liked the Kumho's when we ran them....

I like the wider tires....

Bill P.

Or you could try the Falken Azien sport. A bit harder (200) but it will keep you from getting points added for "racing" tiars.

Uhhh.. why? Are they unsafe?

I echo what Bill said. Pick up some inexpensive wheels and go with the Kumhos.

That said, the Falken Aziens that Chris recommended are a good street performance tire and are very inexpensive (350.00 set?).

I would get the Falken's. I'm considering (well, I was til I broke the motor) doing this as well as a good compromise for street/track.

Check here for the safety issues

http://kumhousa.com/V710.asp

You can't get the 710s any more, so it's a moot point. They've been recalled by Kumho.

Don't use competition tires on the street. They're way too spendy to waste like that. The exception would be the A032R, which is not a very sticky competition tire.

I'm with the others--get yourself a cheap-ass set of cookie cutters and get real competition tires. The older V700s are fine, Hoosiers are better but more $$ and don't last. Or A032Rs if you want them to last for a while.

--DD

Andy,

here is my $.02
I've been running victoracers and yoko A032R's since they each came out...

I switch back and forth at events depending upon qualifying/ practice/ how clean the track is/ if its early in an event weekend/ and wear of course.....

A032R's don't work for our light cars..
buy the victoracers....

regarding 205 versus 225.....(both are available in the victoracer)....

a friend of mine would beat me on a long track running 205's on the front and 225's on his back...
(I run 225's at all 4 corners)..

It was a big track with lots of top speed and I'm pretty sure he was getting an aero advantage out of his front 205's on a 6inch rim... (versus my 225/7inch)

but I think your talking autox..
so just go with the 225's and buy some spare cookies.

(oh.. I need another set of $50/each 7-cookies, so when you find them get me some too...)

b

Ok, how about the Toyo RA-1
I've read very good reports on the racinglist @ rennlist

cheers,

Jeroen

I have a Grassroots Motorsports issue that did a comparison between The Toyo RA-1, the new Hancook Dot-R tire and the Yoko AO32R's. Basically best was Yoko, then Toyo, then the Hancook IIRC

Yeah, but take note of what they were NOT compared against..
On a 40-50 sec course, the Hoosier and Kumho AX tiars are worth 2 sec.....give or take a bit....over
all other non-slicks.

Run the 205. You dont have enough motor to push around 225's. Buy a second set of rims and haul them around or store them with me and I'll drag them to the events for you.

I think the Kuhmo's work great... I also drove the Falkins this past weekend.. They are AWESOME for a cheap tire with a 200 wear rating.

The "quick" guy in class BX was running Kuhmo's and 46's towards the end of the day. I ran Jason's car 3 times after the event and ran 48's. I got out of the car (I didnt run at all during the event) and told Jason the car had 46's in it.. Darren says he wants to drive it and jumps in it. I tell him it has 46's in it and tell him to back off his braking pressure by half compared to the car he was used to running.. he clicks off a 46 first time out in the car !! on the Falkens.

B

I am getting a set of these to stick on my fuchs





http://www.vulcantire.com/azenis_t.htm

In my experience with the Yoko's.....
our cars don't weigh enought to make them work.
I've run kumho's and yokos on a heavy 944 turbo that I used to help run... In that situation the yoko was superior....

on my teener I wasn't getting enough tire temp into the yoko's until after I put the locked rear end in and started slidding the crap out of it.. that when I noticed an improvement in the yoko.....

but I still prefer the kumho

brant