Goodyear Eagle RS Road Racing Tires (DOT)
11-02-2010, 09:29 AM
#3
Rennlist Member
no, but damn they look the part. i've been having problems with my Cups on DE's. with the understeer I get I just shred the heck out of the centers. when i ran corsa's, they held up better with the understeer. i think i'm done with the cups.
11 RS
07 RS
98 C2S
97 C4S
77 911S
11 RS
07 RS
98 C2S
97 C4S
77 911S
11-02-2010, 05:54 PM
#4
Rennlist Member
Your car understeers enough to shred the front's? Check your alignment. That doesn't sound right at all. Your car should just be nimble. (BTW - from the factory the alignment is not acceptable for track use)
11-02-2010, 06:51 PM
#5
Still plays with cars.
Lifetime Rennlist
Member
Shred the centers?? What pressures are you running? Which cups, the real ones or the OEM non R compounds?
11-02-2010, 08:20 PM
#6
Rennlist Member
I've tried them on my Cayman S racecar. The compound feels similar to the hoosiers but the sidewall is not as stiff, so with similar setup the car feels not as precise and moves around over the tires a lot more when at the limit (specially with the racecar being so stiff on 900#s+ springs).
On sticker goodyears I was a full 1.5secs slower than on sticker hoosiers 9even after making some setup changes), so Im not running those again; but might be a good option for DE if they are more durable and cheaper than Hoosiers.
On sticker goodyears I was a full 1.5secs slower than on sticker hoosiers 9even after making some setup changes), so Im not running those again; but might be a good option for DE if they are more durable and cheaper than Hoosiers.
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11-07-2010, 02:32 PM
#8
no, but damn they look the part. i've been having problems with my Cups on DE's. with the understeer I get I just shred the heck out of the centers. when i ran corsa's, they held up better with the understeer. i think i'm done with the cups.
11 RS
07 RS
98 C2S
97 C4S
77 911S
11 RS
07 RS
98 C2S
97 C4S
77 911S
Alignment and adjusting the front sway bar will help dial out some of the understeer. If your inside and outside temps are the same, you won't get much out of an alignment as that would indicate that your camber is already set right. If your inside temp is lower, you need more camber. I run my front bar full soft and rear bar full hard, which helps quite a bit with dialing it out. Toeing out the front will also get the car to turn in better.
11-07-2010, 09:20 PM
#9
If you are wearing out the centers of the tires and not the inside or outside, you are running too much pressure. You can verify with with a probe type pyrometer. After a session, check the center heat at the cord against the inside and outside. You are probably > 10 deg higher.
Alignment and adjusting the front sway bar will help dial out some of the understeer. If your inside and outside temps are the same, you won't get much out of an alignment as that would indicate that your camber is already set right. If your inside temp is lower, you need more camber. I run my front bar full soft and rear bar full hard, which helps quite a bit with dialing it out. Toeing out the front will also get the car to turn in better.
Alignment and adjusting the front sway bar will help dial out some of the understeer. If your inside and outside temps are the same, you won't get much out of an alignment as that would indicate that your camber is already set right. If your inside temp is lower, you need more camber. I run my front bar full soft and rear bar full hard, which helps quite a bit with dialing it out. Toeing out the front will also get the car to turn in better.
Tire pressures-> Alignment-> Sways. All need to work in concert and be correct. I am under the impression a lot of folks play with tire pressure and alignment and neglect the sways which are critical to dialing in the handling you want.
11-07-2010, 09:51 PM
#10
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
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see here:
https://rennlist.com/forums/997-gt2-...ried-them.html
I still have not tried a set - keep buying r6 from mooty
https://rennlist.com/forums/997-gt2-...ried-them.html
I still have not tried a set - keep buying r6 from mooty
i got slicks too ;-)
11-07-2010, 09:52 PM
#11
GT3 player par excellence
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pressure has a RANGE. once i am in the range, i dont bother with it anymore.
11-07-2010, 09:53 PM
#12
GT3 player par excellence
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I've tried them on my Cayman S racecar. The compound feels similar to the hoosiers but the sidewall is not as stiff, so with similar setup the car feels not as precise and moves around over the tires a lot more when at the limit (specially with the racecar being so stiff on 900#s+ springs).
On sticker goodyears I was a full 1.5secs slower than on sticker hoosiers 9even after making some setup changes), so Im not running those again; but might be a good option for DE if they are more durable and cheaper than Hoosiers.
On sticker goodyears I was a full 1.5secs slower than on sticker hoosiers 9even after making some setup changes), so Im not running those again; but might be a good option for DE if they are more durable and cheaper than Hoosiers.
hum so they are like toyo's then... not good.
11-08-2010, 09:32 AM
#14
Race Director
Pete...you were flying this past weekend! I hope I never held you up. I heard you got a 2:19 on Sunday....Dang! You and those Ferrari Challange 430's were something else out on the track.
11-08-2010, 09:58 AM
#15
Nordschleife Master
Where do you get your RA1's? I was running R888
Nice meeting you
Those Ferrari guys work on a whole different budget level.........
I need a trailer now, the R888 SUCK driving home