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02-24-2015, 11:40 AM | #45 |
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This is an excellent thread as it helps ease the decision what's the next step suspension wise. I've already done the 261M square conversion with 255 Federals RS-R.
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02-24-2015, 12:56 PM | #46 |
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What do people think about the following comment made by BerkTechnology in another thread...
"If you add more camber via camber plates and a slight fender roll and you will not rub. We are running on 18x8.5 +38 plus a 5mm spacer and 255/35/18 up front now and we do not rub at all. So effectively we are running a 18x8.5 +33 on 255/35/18 in the front. Rears are now at 265/35/18 on a 18x9.5 +58. ALL STOCK BODY PANELS and zero rubbing!" http://www.1addicts.com/forums/showthread.php?t=252526 On a side note, how much easier would it be to fit a 245/35/18 Michelin PSS up front with my mods and rim selection? Lots of guys with Apex Arc-8s are doing this relatively easily? I really wanted to try the Dunlop Direzza ZII Star Spec 255/35/18 in a square setup but I am starting to doubt it will be possible now with the suspension I have purchased. I suppose I could take a saws-all to my fenders? Last edited by KRyn; 02-24-2015 at 04:36 PM.. |
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02-24-2015, 02:33 PM | #47 | |
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The Michelins are much narrower at the tread then a star spec or RS3, due to the shape/profile of the tire. I think the 17" wheels are a better choice for autox duty due to cost and tire selection but you can make 18s work. Style 68s are 17x8.5 with a 50 offset, perfect up front with a 12mm spacer.
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02-24-2015, 11:09 PM | #48 | |
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I think I am going to order some tires in standard sizes/fitment for now. I will remove my rears and do a bunch of test fitting and see if I can get the 255/35/18s to play nice up front with mt TC Kline coils and other suspension bits. I will report all of my findings when I do so. |
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02-25-2015, 07:03 PM | #49 | |
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02-25-2015, 09:37 PM | #50 | |
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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03-04-2015, 02:31 PM | #51 | |
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03-25-2015, 12:25 PM | #53 |
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Alright, I am finalizing my parts list and placing orders for the final pieces my project requires. I plan to install everything some time next month.
After communicating with TC Kline, reading and rereading everything posted in this thread I have decided to order 12mm spacers (maybe 15mm now?). Hopefully with an effective offset of 40 (or 37?) and roughly -3 degrees of camber I will be able to run a square 255/35/18 setup on my car. I will only look to a fender roll & pull as a last resort if I have no other options. Can anyone comment on which tire will have a smaller sectional width between the PSS and new Direzza Star Spec II on a 8.5” rim? I am leaning towards the PSS as it appears to have a smaller sectional width on a 8.5" rim as well as coming in more sizes. The 255/35R18 Dunlop Direzza ZII's has a sectional width of 10.2" (according to this thread) The PSS has a sectional width of 10.2" also according to Tire Rack The NT-01 only has a maximum width of 9.49" according to Nitto's website Kgolf31 what size tire are you running on your 17" rims? PigFarmer what kind of clearance did you have between the the tire wall and the coil / strut while running the 245/35/18 ET45? Was it substantial enough to be able to squeeze a 255/35/18 in there, or would you require a spacer? Do you think at an offset of 40 or 37 would be more likely to make everything fit with a 255/35/18? Elsabor67 How much camber do you have dialed in? After reading your post I might actually consider getting a 15mm spacer if you claim you only had about 6mm of clearance to the strut whilst running a 235 NT-01 with TC Kline D/A... Last edited by KRyn; 03-25-2015 at 02:45 PM.. |
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03-25-2015, 01:01 PM | #54 | |
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03-25-2015, 02:51 PM | #55 | |
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03-25-2015, 03:20 PM | #56 |
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After examining your picture on page one and reading your comment about having a fingers worth of space, do you believe you could afford to have your tire 10 mm closer to the spring perch without any problems, assuming you can have the tire only a couple thousands clearance to the spring land without any issues? If so that would make me feel better about running an off set of 40 with a 255/35/18 tire on a 8.5" rim.
dcarron9999 do you believe you could afford to have your front wheels/tires 2mm closer to your fenders without any ill effects? Or would this require a fender roll? Last edited by KRyn; 03-25-2015 at 04:57 PM.. |
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03-25-2015, 06:15 PM | #57 | |
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Also, I don't like 255 on 8.5 |
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03-25-2015, 06:17 PM | #58 | |
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03-25-2015, 06:44 PM | #59 |
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Kgolf31
PigFarmer I really appreciate you guys taking the time to answer my questions. Here is my question to everyone in this thread. Would you rather run 245/35/18 fronts with 255/35/18 rears or a squared 245/35/18 setup? The car will be a summer time daily driver and be heavily auto-crossed this year with the possibility of one or two track days. Losing some tread in the back wouldn't be the end of the world, my car simply has a Dinan Stage 1 (came with the car) and it can hardly hook with the crappy run flats currently on it. My hope in running a square 255/35/18 setup was to improve turn in, the car with 225/40/18s in the front feels off. From what I have read getting some more meat up front improves everything substantially. Moving to a 245 should be a vast improvement over a 225 regardless. Also being able to rotate the tires would be nice. With that said, if I only have a 245/35/18 in the front with a 40 off set I likely wont need as much negative camber so the wear shouldn't be as bad. I am happy to know that a 245/35/18 will indeed fit up front with my suspension setup. When comparing a 245 to a 255 on a 8.5" rim what are the pros and cons of each? I assume a 245 will have a stiffer side wall (a good thing for when turning in hard I assume?) and only lose out slightly in terms of contact patch to ground? Last edited by KRyn; 03-25-2015 at 07:07 PM.. |
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03-25-2015, 07:13 PM | #60 |
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255 on a 8.5 wheel you're not going to have good turn-in. The tire is going to want to skirm on the wheel and you're ultimately going to delay response of the tire to achieve max grip.
This is an AWESOME calculator, take some time playing around with it: http://bndtechsource.ucoz.com/index/...alculator/0-20 I run 245/40 on a 8.5 wheel. I'd only go 255 on a 9" wheel IMO. You don't gain much going up tires on a 8.5 when you're at 245. |
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03-26-2015, 07:44 PM | #61 | |
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With all that camber (-3.2*) and 0 toe in the front, stiff sidewalls of the Dunlop Direzza ZII, one thing Im not in love with is tramlining on the streets. Got to live with that I suppose.
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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03-27-2015, 10:51 AM | #62 | |
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03-28-2015, 02:53 PM | #63 | |
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
Last edited by dcaron9999; 03-29-2015 at 10:13 AM.. |
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04-24-2015, 02:43 PM | #64 |
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My front 255/35R18's tires/18x8.5 ET52 style 261 wheels have an "effective" offset of 42 (ET52 wheels with 10mm spacers). I have -3.2* of camber in front, and lowered suspension (Swift Spec-R springs and Bilstein B8 dampers). I was on stock linear springs and dampers prior to this...
With my new B8's, I have a little bit of strut clearance left (2-3mm), and now considering replacing my 10mm spacers with 8mm spacers. Tire is a little more buried in the fender. Switching the spacers from 10 to 8mm would equate to an ET44 offset (ET52 - 8). This switch would remove my concern with rubbing under hard compression, when Im lapping at the track, going over a curb, etc. My fenders are not pulled or rolled, and with stock suspension, I had rubbing on front passenger side under hard compression at the track with my square 255/35R18 setup. I will find out if I rub with my new setup and new Dunlop Direzza Zii StarSpec tires at my first lapping event of the 2015 season next week.
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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04-24-2015, 11:56 PM | #65 |
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Fellow Canadian here, I am also building a 1 series for a combination autocross/weekend car. As I am struggling with the US dollar in the same way, can you post where you bought your KW Clubsports and how much they were?
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04-25-2015, 06:23 AM | #66 | |
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The specialize in german suspension and have the best pricing in Canada. You can see their multiple ads here: http://www.kijiji.ca/o-posters-other-ads/8724251 Here are quotes I got from them earlier this year, when I was considering coilovers. Chose to not do that. I opted for Bilstein B8 dampers and Swift Spec-R springs on my 135i, to get maximum wheel and tire clearance for my square 255/35R18 setup. ST XA (height and damping rebound adjustable) : 1385$ shipping inc ST XTA (height, rebound and compression adjustable): 1585$ shipping inc KW V3 inox : 2365$CAD KW ClubSport: 2850$CAD
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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