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05-07-2009, 06:53 PM | #23 |
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Drives: 1988 M3, 1990 M3, 1998 M3/4
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Location: Oklahoma City, OK
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Garage List 1998 BMW M3/4 [10.00]
2011 BMW M3 Sedan [9.28] 1988 BMW M3 [9.40] 1990 BMW M3 [10.00] 2008 BMW 135i - sold [0.00] 2003 BMW M3 - sold [0.00] |
Can you share your ride height information?
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1988 BMW M3 - Hennarot/Black
1990 BMW M3 racecar - Diamond Schwarz/Black 1998 BMW M3 - Alpine White/Mulberry 2011 BMW 328i racecar - LeMans Blue/Black |
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05-19-2009, 03:16 PM | #24 |
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05-20-2009, 01:00 AM | #25 |
エアーマンが倒せない
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05-20-2009, 09:47 PM | #26 |
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And we beat that JRZ equipped NSX! We're hitting the races again at Willow Springs raceway. May 30th is race day! Just a few tweaks done to the car but we're looking to set a new record in the Berk 135i.
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05-20-2009, 10:03 PM | #27 |
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Drives: F80 M3
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Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com
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05-21-2009, 02:21 PM | #28 |
My ride: bimmergirl84
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I will let Berk post what setup details they want to, but I can share one exciting thing: We are now sponsored by Dunlop!!!
After all the tires we've tested on the 135i (Yokohama Neova, Toyo R1R, Hankook RS2, Dunlop Z1 Star Spec), the Dunlops were our favorite so this is doubly awesome! |
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06-08-2009, 09:11 PM | #30 |
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I think we were on the Toyo R1R's at Bimmerfest... not sure though.
But, we have since switched to the Dunlop Direzza Star Specs and haven't looked back! They are a far superior tire in terms of ability to take heat, consistency, and driver feel/feedback. After running them for a few events, we actually are now sponsored by Dunlop which is awesome |
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06-24-2009, 04:45 PM | #32 |
My ride: bimmergirl84
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Simply because we could. We've been struggling with rear grip with this car, so when we found some Enkei wheels that got us to 265's in the rear, we took them.
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06-30-2009, 07:19 AM | #33 |
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Why is the reason you guys move up to a different class which allows R-spec? I watch your videos and the car just squirms around everywhere and it is so different from driving on R-specs. Do you guys get Dunlop DZ03G there? I have tried all the R-specs out there. They are the best. Dunlop really do some great tyres so you are lucky to be sponsored by them!
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07-01-2009, 03:50 AM | #34 | |
My ride: bimmergirl84
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The 140-200 treadwear street tires we run aren't very different from a 100 treadwear DOT R-comp. The difference in lap time is about 2s/lap over a 2:00 lap. The R-comps like a little bit less slip angle, but only a little bit. Both types of tires "squirm" around a LOT compared to a proper racing slick. Our car moves around a lot because it's just too loose; not because of the tires. We are still working on setup! And yes, we are very very happy with our Dunlop tires! They perform amazingly well on this relatively heavy car. Most street tires cannot hold up to the abuse our 135i gives them. |
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07-01-2009, 07:26 AM | #35 | |
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07-01-2009, 01:41 PM | #36 | |
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Hmm ok. Treadwear 50 tires would be illegal even for the next class up above us, I believe. The tires that are legal for that class must be DOT (Dept. Of Transportation) Approved for road use. Most cars in that class run the Toyo R888s which I think are treadwear 100. Out of curiosity, any idea how your Dunlops compare to that tire? We have our own custom linear spring rates on the car (the "kit" V3 rates were too soft). We have tuned out a lot of the oversteer with our custom springs and by going back to the stock rear sway bar, but I think we still need to add some more front spring. |
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07-01-2009, 07:13 PM | #37 |
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Although it's slightly off topic, I'm gonna ask anyway =P
How would you feel about those tires (the star specs) on a street car that has to be prepared to drive in the rain (but never snow, I would have snow tires for that) on the highway? |
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07-02-2009, 01:44 AM | #38 | |
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