Tires
04-08-2008, 04:46 PM
#16
Instructor
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I'd probably say the RA-1 at full tread would be best R-Comp for both, because they will heat up quicker than MPSC for Autox use. My MPSC's take about 1-2 laps to heat up depending on outside temp. They do not heat up in a >60 second autox run.
Other options are V710's or other Kuhmo AX tire.
-Scott
Other options are V710's or other Kuhmo AX tire.
-Scott
04-08-2008, 04:54 PM
#17
Race Director
I am presently using Toya RA-1s which I purchased last year from the PO of my car. when I got them from him they were about 2 years old and I used them for a season. I used them for both DE and Autocross. Before the RA-1 i used the Kumho V710 for autocross only and before that I bought a set of Victoracers which I used jst for autocross.
04-08-2008, 06:13 PM
#18
Race Car
Thread Starter
Dan,
Thanks for the clarification.
Query: Why do you need a better tire? Do you want to put down faster lap times?
Here's some food for thought:
1. Don't give up on the RA-1's just yet -- you were on an old set that were probably heat cycled beyond their sweet spot. (The RA-1's are known for this, given their long-tread life).
2. IIRC, you are an intermediate driver. If so, you aren't nearly at the limits of the RA-1's, even the old ones you were on.
3. The performance delta between the RA-1's, MPSC's, Kumho's, (insert the next best R-compound tire) is very small. You'd have to jump into a Hoosier R6 or possibly some other ultra-slick, barely DOT approved R-compound. Such tires will typically run you alot more coin, and not last as long. And you won't be extracting the most out of them, given the fact that you're not near the limits on the 'standard' R's. I wouldn't consider that money well spent.
4. Want to go faster? Learn to drive better. Seat time seat time seat time. Even in AX, over the long run, improving your driving skill will yield better times than improving your tires.
-Z-man.
Thanks for the clarification.
Query: Why do you need a better tire? Do you want to put down faster lap times?
Here's some food for thought:
1. Don't give up on the RA-1's just yet -- you were on an old set that were probably heat cycled beyond their sweet spot. (The RA-1's are known for this, given their long-tread life).
2. IIRC, you are an intermediate driver. If so, you aren't nearly at the limits of the RA-1's, even the old ones you were on.
3. The performance delta between the RA-1's, MPSC's, Kumho's, (insert the next best R-compound tire) is very small. You'd have to jump into a Hoosier R6 or possibly some other ultra-slick, barely DOT approved R-compound. Such tires will typically run you alot more coin, and not last as long. And you won't be extracting the most out of them, given the fact that you're not near the limits on the 'standard' R's. I wouldn't consider that money well spent.
4. Want to go faster? Learn to drive better. Seat time seat time seat time. Even in AX, over the long run, improving your driving skill will yield better times than improving your tires.
-Z-man.
What would be a good DE/autocross tire me for in intermediate track driver? (However, I do want the best tire that would fit into that category)
04-09-2008, 07:46 AM
#20
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Look for mooty over the 997 GT2/3 board. He has tried both since a huge fan of RA-1 but if I remember correctly, the R-888 weren't lasting as long as the RA-1.
04-09-2008, 06:34 PM
#25
Burning Brakes
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At full tread they r a little slippery. as they wear they get more grippy and faster. i usually run em down to the cords !!
if u need the ra1's fast out of the box i would rec shaving..
good luck
v-tach
if u need the ra1's fast out of the box i would rec shaving..
good luck
v-tach
04-10-2008, 10:43 AM
#26
Race Director
The break in for full tread RA-1's is about 6-12 sessions on track. That should do it. So just drive them. Shaving to 4/32 cuts the break in time to 6 sessions or so.
04-10-2008, 12:07 PM
#27
Rennlist Member
I am thinking of the RA1 or maybe the Kumho Ecsta V700 for a sunny day street tire and occasional autocross/drag race tire. I have used the RA1 on the street and they were pretty comfortable. I want something comfortable but grippy.
I will be using the widest 18" sizes.
Does anyone have any experience with either of these on the street, or have another recommendation? I need something with more grip than a normal street tire as my car has too much torque for a street tire.
I will be using the widest 18" sizes.
Does anyone have any experience with either of these on the street, or have another recommendation? I need something with more grip than a normal street tire as my car has too much torque for a street tire.