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08-20-2012, 07:12 PM | #1 |
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Money no object Susp. upgrades?
If cost was not a consideration what suspension setup would you choose for the ultimate street/autocross/track setup for a 135? Tires not withstanding, because that's a whole other ball of wax.
Everyone has an opinion, but I'd love to get an idea of what I should shoot for. I autocross frequently and am willing to deal with a little stiffer suspension than some, but don't want a total compromise of ride quality. I find the current setup ill prepared for autocross. Tons of understeer which I'd love to do away with (although driver error has a lot to do with that as well). Thanks for any input. Current setup 2012 135i M pkg 6mt Dinan Stage 1 suspension Apex 18's w/PSS 235/40/18 265/35/18 BMS Intake BMW Perf exhaust Dinan Stage 2 tune |
08-20-2012, 10:00 PM | #2 |
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See my sig for all the new susp mods I got. Ride is same, not much harsher at all. Gone is body roll and much less understeer. Jury is still out as I am waiting for cooler weather before AutoX and track time.
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08-21-2012, 12:03 AM | #3 |
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Ohlins
Still reasonably ish priced, but $2500pp plus install for the base models.. isn't cheap.. Look exponentially more for higher spec stuff. Serious track gear though. |
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08-21-2012, 12:28 AM | #4 |
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ohlins.
because... ohlins. if your roads are crap like mine, stay with the standard springs. if they're reasonably smooth, talk to HPautowerke and let them talk you into some swift springs. |
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08-21-2012, 01:35 AM | #5 | |
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I guess if you consider BMW has a multi-million dollar r&d budget. The suspension bits are about as good as they're gonna get. What about coil-overs or spring/shock combos? The M3 parts will break the bank for me, but it'll be nice to have something to shoot for. |
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08-21-2012, 03:01 AM | #6 | ||
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08-21-2012, 04:08 AM | #7 |
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Money no object?
ER Front Widebody conversion. Then run 285's square. Get full M3 bits + Ohlin's or Moton's. LSD as well. |
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08-21-2012, 06:24 AM | #8 | |
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08-21-2012, 07:25 AM | #10 |
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+2
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08-21-2012, 08:00 AM | #11 |
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I'm hearing a lot of talk about saving money for a money is no object thread.
Drop out the front and rear subframes and retrofit the frames from a 1M. It's not too much of a difference from all M3 parts in the front. But in the rear it completely changes the suspension geometry. Do that - and ER kit up front + LSD and you'd be pretty set |
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08-21-2012, 01:19 PM | #12 |
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If money is no object, buy a Ferrari instead:-):-):-)
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7/08 135 Coupe, Crimson Red, 6 SP, Sport, Taupe Lette/Aluminum. Performance Mods: JB4 on Map 5, BMS DP Fix V3, Injen polished intake, AR Catless DP, Maddad resonated mid-pipes, aFe exhaust polished tips, ST Suspension Coil Over and Hotchkis front sway bar. Others: BMS OCC, BT Scanner, Mud Flap. Next Mods: AA Front Strut Brace.
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08-21-2012, 01:44 PM | #13 |
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I like the Ferrari idea, now where do I fit that pesky baby seat?!
Gonna order the bushings, dinan camber kit and m3 front suspension stuff this week. Then I'm gonna go hunting down some 996's hehe. This car is so quick in autox it's gonna be nice to get the backend to rotate. As is I'm only half second off the quickest 996's and a second and a half of the gt3's. As for the ohlins well there on the to do list along with some seat time at willow springs and laguna seca. |
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08-21-2012, 03:22 PM | #14 | |
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08-21-2012, 06:30 PM | #16 |
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08-21-2012, 06:33 PM | #17 | |
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08-22-2012, 01:37 AM | #18 |
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I would do a full M3 suspension swap, front and rear, strut tower brace and all, adjustable rear toe arms, Ohlins R&T or JRZ RS1 and a good LSD.
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08-22-2012, 02:51 AM | #19 | |
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If you want to maintain comfort when not racing, keep the stock suspension (springs / shocks) and swap them back in. |
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08-23-2012, 01:02 AM | #20 | |
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But really, 305 or go home Can't imagine how wide it'd look from behind on our teeny cars Lsd with shorter final drive allowed? ;p Cant forget strut braces.. Arc or bmwp cf front, probably just a whiteline rear, and underbody etc. etc. |
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09-01-2012, 03:54 PM | #21 |
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Want to get rid of your understeer at the autox then you need some more negative camber and scratch the 235/265 tire setup. You need a square setup. Your car is almost perfect 50/50 front/rear weight balanced. Having a 235/265 setup is almost guaranteed to give you understeer no matter how much negative camber you dial in.
My recommendation is the dinan camber plates plus a set of wheels with 235 all around for the autocross track. The dinan camber plates are not adjustable which for me is a positive since some adjustable camber plates can be problematic over time.
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09-01-2012, 05:45 PM | #22 | |
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