R compound tires.

General chat that fellow COM'ers may be interested in.
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chaos4NH
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R compound tires.

Post by chaos4NH » Tue May 01, 2007 9:09 am

Looking for advice, and hope to get recommendations, on picking some R compounds for the red wagon. Fairly heavy car, 3150#, about 60% - 1800# on the front.
On the less expensive side, Stephan, how did you feel the NT-01's performed? Has anyone run Avon Tech Ras? BFG Geforce R1s?
Kumho V70As?
If it matters, I can run 225/45-17 or 235/45-17.
Thanks to all!
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Post by Georgethefierce » Tue May 01, 2007 9:49 am

Kumho Victoracers have been known to work well on heavy cars.
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Post by rajito » Tue May 01, 2007 10:24 am

3150 is heavy, eh? I've been running RA1's and they have been pretty decent in terms of grip vs. longevity. I might try the Nittos next.

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Post by cuda6666 » Tue May 01, 2007 10:49 am

Sam,

I have some old Kelly Springfield bias ply tires left over from when I used to run an Austin Healey with COM in the 'Sixties. Might be just what you need. :P
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Re: R compound tires.

Post by WillM » Tue May 01, 2007 11:46 am

chaos4NH wrote:Looking for advice, and hope to get recommendations, on picking some R compounds for the red wagon. Fairly heavy car, 3150#, about 60% - 1800# on the front.
On the less expensive side, Stephan, how did you feel the NT-01's performed? Has anyone run Avon Tech Ras? BFG Geforce R1s?
Kumho V70As?
If it matters, I can run 225/45-17 or 235/45-17.
Thanks to all!
Toyo RA-1, shaved to 4/32". Sticky and very consistant. They will be sticky to the cord! A favorite of mine for many years.

If you are moving to race rubber, you might want to evaluate your alignment settings and dial in a bit more camber.
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Post by tmak26b » Tue May 01, 2007 12:06 pm

I agree, my 3 years old RA1 is still setting good times, runs forever and have no problems. Heck, they are ride smoother and make less noise than my street tires.

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Post by chaos4NH » Tue May 01, 2007 4:46 pm

cuda6666 wrote:Sam,

I have some old Kelly Springfield bias ply tires left over from when I used to run an Austin Healey with COM in the 'Sixties. Might be just what you need. :P
Frank, I am at loss for words! :shock: Such generosity! :D That might save the bucks I need for the coil overs and camber arms, though!
:wink:
Thanks guys. At this time the RA1's have the edge, but no decision until all the votes are in. I found 235/45-17 RA1s fpr $213.95
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Post by StephanAlfa » Tue May 01, 2007 5:09 pm

I had Yokohamas, Kuhmos, Toyos and Nittos. Here is my 2 cts:
Yokohama = definatly a rain tire, awesome rain tire. Beinf the rain-man I am I absolutely count on those and had great results;
Kuhmos = good tires but wear out fast.
Toyos = great tires, reliable, long-lasting, forgiving (when you spin) and good prive for the quality of the tire. I measure the price of tire like I rate a good wine .. it's all about price/quality ratio.
Nitto = Tried it at WGI and had a grea time with it. Felt it fast faster than the Toyos and equally reliable. Minor peeve was it squealed like a street tire at times but hey! who's listening? Great price/quality ratio.
If you do't want to spend $$ on Hoosiers my 2cts is go with Nitto.
Hope this helps.

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Post by rajito » Tue May 01, 2007 5:18 pm

Did you have full tread or shaved Nittos? Do you think the full tread Nittos grip as well as shaved RA1's?

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Post by DanDarcy » Tue May 01, 2007 5:30 pm

Hey Frank -- if Sam doesn't want your old tires do you think I could used them on my Mustang :?: The light Mustang :roll: has a tendency to eat up rubber but those Kelly Springfields should last a long time :wink:
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Re: R compound tires.

Post by offcamber09 » Tue May 01, 2007 7:54 pm

chaos4NH wrote:Looking for advice, and hope to get recommendations, on picking some R compounds for the red wagon. Fairly heavy car, 3150#, about 60% - 1800# on the front.
On the less expensive side, Stephan, how did you feel the NT-01's performed? Has anyone run Avon Tech Ras? BFG Geforce R1s?
Kumho V70As?
If it matters, I can run 225/45-17 or 235/45-17.
Thanks to all!
The Avons are not very quick, but will last quite a while- BTW they are THE most difficult R compound tire to mount. I wasn't aware of BF Goodrich getting back into the R compound market again until your post. The last generation of R1s had a habit of forming a groove of doom right down the middle- even when not over-inflated. I'm sure the new tire is better. I would use the Kuhmo 710 again, as I've said in other threads, the tires do fall off some after several laps in a heavy car, but they do stabilize- they do not continue to fall off. They are great time trial tires because they come up to full stick very quickly. I used 1 set of 710s in a full championship season.

"Minor peeve was it squealed like a street tire at times but hey!"

Stephan, I thought the tire squeel I got at WGI was odd as well- I was on 2 year old Hoosiers (Thanks Greg R.)
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Post by DanDarcy » Tue May 01, 2007 8:29 pm

Stephan, I thought the tire squeel I got at WGI was odd as well- I was on 2 year old Hoosiers
I was using Hoosiers R6 that were new for Lime Rock in the Fall , and I thought I was on regular street tires with the screach they made at Watkins .
I have never had the Hoosiers squeel like that :oops:

Also thanks to everybody for a great time at WGI and the "Birthday Card". I got passed by Ryan C and Joe L in the ST1 :( and than they even passed me on the highway on the way home. :roll: I guess life has just passed me by :cry: I did get a 2nd in STGT though :lol:
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Post by Scooter70 » Tue May 01, 2007 8:33 pm

I'm running a set of RA1 scrubs that I bought from the Bimmerworld World Challenge team. $50 or $100 a tire depending on how many heat cycles they have on them. They're currently backordered but you can e-mail them and ask when they're going to "make more".

https://secure5.nexternal.com/shared/St ... D=629&All=

I've had pretty good luck with them on my 3650# GTO. Because of clearance to the strut, a 245 is the biggest tire I can put on the front. I have 3 track days on this set and I'm sure they've got another one in them though I probably should flip them on the wheels to put the good edge on the outside.
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Post by Subw00er » Tue May 01, 2007 10:42 pm

I ran the hoosier r6 at wgi. This is my first r compound, but I like their feel. They grip like snot!

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Post by StephanAlfa » Wed May 02, 2007 7:02 am

rajito wrote:Did you have full tread or shaved Nittos? Do you think the full tread Nittos grip as well as shaved RA1's?

Raj
Hi Raj: The NItto-01 tires are designed to get go right from the shelf, not requiring heat cycle and/or shaving. This is another advantage of this tire vs. Toyo or Kuhmo.

Glad to hear (from Scott) that he got squeal so I can dedcut is related to track surface.

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