06-26-2014, 05:30 PM | #46 |
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Alignment specs.
I've got about 5mm up front of clearance to the fender. Dialing back some front camber to about 1.8-2.0 would be about the limit. I've been scrubbing these tires in during daily driving this week for a weekend event and surprisingly with 2.75 degrees up front at 0 toe it's very "street-able".
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06-26-2014, 07:20 PM | #47 |
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Not a track setup per-Se...
Michelin PSS on OEM 400m wheels: 18x8" ET34 225/45-18 front 18x8.5" ET47 255/40-18 rear Added BMS spacers at 12mm front/15mm rear Stock springs and DHP dampers/steering. M Sport brake upgrade option. Adding Challenge braided hoses, race fluid (Motul?) and probably R4S brake pads. For track use... I definitely prefer to NOT run my rear tires with higher pressure than the fronts. I found myself bleeding air out of my rear tires all day while experimenting at the track... I even added a bit to the front compared to BMW's 100MPH+ recommendation. The rear of my 335 is lighter than the front... Why run more pressure in the rear anyway?
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06-26-2014, 07:36 PM | #48 | |
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06-29-2014, 11:24 AM | #49 | ||
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I've found the type of tire you run and wether or not you run a LSD are two major factors on car setup. I try to keep about 1.5 degrees of separation between front and rear camber for balance (depending on running staggered or square). Yesterday the car ran the best it has ever based on about 80 autocross runs and 4 HPDE's in the last 8 months. Now that I've got a LSD, Id like to find a thicker rear bar to help with more initial turn in and rotation in the rear. 275 (RS3's are an amazing tire btw) square setup makes the car a little less "sensitive" to change direction with DHP and Dinan springs with Dinan software. My guess is that KW setup will be the way to go as far as sway bars. As long as there's some sense of adjustability, KW doesn't need to be perfect.
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06-30-2014, 09:59 AM | #50 | |
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In the rear, I was happiest at 38psi. 40psi all around wouldn't kill...I'll try it next track day.
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07-07-2014, 08:46 PM | #52 | |
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07-15-2014, 10:04 AM | #53 | |
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Usually toe out's represented as a negative number and yours reads positive (which would denote toe in), but the tire graphics look like they're depicting toe out so I'm confused. |
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07-15-2014, 10:36 AM | #54 | ||
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It's a total of 0.21 toe in.
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08-21-2014, 10:18 PM | #55 |
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This is amazing!
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09-13-2014, 09:06 PM | #56 | |
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I guess it's because r-compound run little wider than street tires.
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10-21-2014, 10:12 PM | #57 | |
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10-23-2014, 10:14 AM | #58 |
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Did the tire pressure on the display come with your car, or did you code that? My 2013 doesn't have that and I'd really like to have that
Thanks for the info on the hot tire pressures for the stock RFT. My car was around 44-46psi and that was too much. Car was understeering everywhere. And the tires (contisportcontact5) started chunking after 1 session |
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10-23-2014, 10:35 AM | #59 | |
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Definitely keep those run flats under 40psi hot.
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10-23-2014, 02:49 PM | #60 | |
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The main take away was I'm not going to bother tracking the 335 anymore. It is my wife's daily, and it is a "sport line" car without the extra cooling, so the oil got to 280F+, car felt like it was going into power reduction, and the tires had so little grip (and I am not going to risk leaving her stranded by switching to non RFT) Pretty disappointing, but not unexpected. If I was going to order a 335 for myself, I would definitely get the m sport package with m sport brakes and switch out the tires ASAP (to the Dunlop ZII star spec, etc) |
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10-28-2014, 02:40 PM | #61 | |
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10-28-2014, 05:58 PM | #62 |
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01-18-2015, 03:14 PM | #63 |
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Bumping this -
What would you guys suggest as a starter track tire for an 18x8" wheel vs 8.5"? I already have them from my snow wheels so I am thinking to re purpose them as track rims rather than buying another set or trying to use the staggered 19's on my Msport. Are 245/40/18's too wide for the 18x8s at the limits?
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01-19-2015, 02:59 PM | #64 |
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I'm running Apex 18x9 et 42 on mine also. I have Dinan Springs installed so she is .75" lower than stock. Auto X I run 255/35 18 Dunlop Zll's with a 5mm spacer. No problem with my M Brakes clearing at all.
pic just sitting still on the track in the Slalom section The Sway Bars are not installed yet.
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01-19-2015, 05:27 PM | #65 | |
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01-20-2015, 12:30 PM | #66 | |
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For 235's would you go with a 40 profile or 45? Looks like the 45 profile is closer to stock in terms of size but looking on Tire rack it seems to have much fewer options for the extreme performance summers.
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