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Tire Help, Again I am sure

I going to buy a set of tires for the track , and need your thoughts.

I have 2.4T MFI With 6x16 and 7x16.

Questions,

1. Do I stay with the 16s or go to a set of 7x15s I have

2. What tires do I go with? Avons, Toyos.......

I don't drive the car very often, maybe once a week. never in the rain.I plan to have about 5 track weekends this year.


So do I have the 15s with the just track tires or get rid of the tires on the 16s and just have one set? I plan to do a 3.2 swap this coming year also.

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Derek Oxford PCA - Nationally Certified Instructor
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Old 12-10-2005, 11:33 AM
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I just got a set of the Toyo RA1s for the track and they are great.
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Old 12-10-2005, 03:10 PM
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Derek,

Even if you are relatively new to the track, having a set of wheels and tires specifically for the sport is very nice - especially if you already have the second set of wheels!

If we were you, our first question would be which WHEELS to devote to the track. You mentioned the widths of your 16"s, but not your 15"s. GENERALLY, we would want the wheels which are the widest for track use, so if your 15s are, say, 7" fronts and 8" rears, we would use those.

If the 15s are the same widths as your 16s - 6" and 7" - then we would check to see which "set" of wheels is LIGHTER. And do not assume that the 15"ers will be lighter just because they are smaller - best to actually weigh them. (The weight of a track car's wheels makes an incredible difference in the car's ultimate ability.)

Finally on the wheels, if the widths are equal, and the weights are very similar, then we would favor the 16"ers because those will allow the tires to provide the larger (better) contact patch.

On the topic of tires, you will probably get as many opinions as there are responders. If you will be using them to drive to and from the tracks, that limits the field. We would seek considered opinions from those track drivers who have used several brands/compounds on an older 911, and we would look for the following characteristics: good grip, consistant grip, forgiving, light weight, good in the rain.

Good luck,
Ed LoPresti
Old 12-10-2005, 07:31 PM
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Ed,
Thanks for taking the time to respond.

The 15x7 are cookie cutters, the car will be trailered to all events.
The 16s have brand new Dunlop sport 900s on them. I did a event and learned I bought the wrong type tire. I did not know any better.
Thanks again
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Last edited by deoxford; 12-14-2005 at 06:28 PM..
Old 12-10-2005, 07:48 PM
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any more thoughts?
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Old 12-14-2005, 04:11 PM
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Toyo RA1s would be my vote, full tread, drive them on the street for a while, then dedicate them to the track. Put them on the 16s.

great tires.

Jim
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Old 12-14-2005, 05:04 PM
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I second Jim's recommendation on RA-1's
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Old 12-14-2005, 05:19 PM
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Jim,
Why the 16s over the 15x7s?
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Old 12-14-2005, 06:27 PM
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Kumho 710's are really nice.

They grip quick and last very well. Very predictable.
I haven't got them greasy yet.

I have four track days and three a/x's on them.
Plenty of tread left for a track day on Sunday at Thunderhill.

Around $160 each.


KT
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Old 12-14-2005, 07:08 PM
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Derek,

I would like to offer a couple further suggestions, based on the additional information you provided: "The 15x7 are cookie cutters, the car will be trailered to all events. The 16s have brand new Dunlop sport 900s on them. I did a event and learned I bought the wrong type tire. "

* Having brand new 16" Dunlops makes things complicated! Especially because, as Jim Hamilton implies, the Fuchs are going to be much better for the track than the cookies, primarily because of less weight. Also, it helps balancing traction to have a slightly wider wheel/tire in the rear on the 911 (or, in this case, narrower in the front.) And trailering the car helps things a lot.

Everything considered, without purchasing additional wheels, we would probably want to end up like this -
1. Cookies and some good performance tires (like Dunlops) for the street.
2. Fuchs for the track. Tires recommended above are very good. However, since these are dedicated track tires, you might want to go to something with more grip, like the Goodyear GS/CS or Hoosier R3SO5. You MIGHT get 5 weekends out of a set, whereas the above-mentioned models will last longer.
3. Attempt to sell your new Dunlops to someone on the forum who needs them for the street.

Maybe this helps,
Ed
Old 12-14-2005, 07:55 PM
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Ed,
THanks for the help, I think I will look for a set of Fuchs for racing.
I really don't like the look of Cookies for drive around town.

I need to get to work on this, Jan 21st will be here before you know it!!
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Old 12-14-2005, 08:48 PM
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