11-25-2016, 08:55 AM | #23 |
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245 with my current setup would definitely rub the perch.
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11-25-2016, 09:00 AM | #24 | ||
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11-28-2016, 11:41 AM | #25 |
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Just a little update. Coded out the EDC module and error light so I'm not stuck in comfort mode.
Also you have to disconnect the actual EDC harness in the trunk. Located behind the right rear of the trunk liner. Where the storage cubby is. New springs should be here this week. Hope to have them installed this weekend along with the new square setup.
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11-28-2016, 02:46 PM | #26 |
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Nice setup, Anthony! I noticed the external reservoirs in your unboxing pic, and was wondering if that was going to impact clearance... I guess they designed it well to clear 18" wheels.
I am also in the early stages of fitting oversized wheels/tires, except I'm working on the F30 platform, which I understand has at least a little more room. At any rate, I am considering the possibility of doing a mild fender roll... With your roll, did you just flatten the inner fold, or did you actually bump the fender surface out? If so, how much... and is it very noticeable? Any advice or words of caution? I currently have 9" wheels with 245/40 Dunlop Direzza SS zII, and I'm hoping to squeeze in 9.5" wheels w/ Nitto NT-01s in 275/35. I've seen this size combo done with other tires (with the same tread width dimensions as the NT-01) so I know it's possible, but it will be a very tight squeeze. I've got Ohlins R/T coil overs, and I swapped the front springs to 7" Swift springs (which have such a compact stack height that they still accommodate the complete stroke of the Ohlins damper), so my perches are up high enough to clear the tire... But I wouldn't be surprised if I still come up short a quarter inch or so.
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11-28-2016, 05:13 PM | #27 | |
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I just went with a roll to flatten the inner lip (done it on almost all my cars). Having said that, even when just flattening the inside lip you will get some minor pull to the fender. It's just inherent with the rolling process. Not much you can do to get around it. Most people will not even notice it, but I notice it just because of my own experiences. I hope a roll is all that's needed to fit my 255 up front. I actually think I will have room to spare. Obviously if you do a roll and a pull you will get more clearance. Advice: On the the 2 series you do NOT have to cut the plastic fender lining like you do on most other cars when doing a roll. Make sure whoever does your roll realizes that. This is actually a nice plus, because it allows a cleaner roll (no tabs to create waves in the fender). I assume your F30 is the same. Many cars need to have the fender lining cut along the lip when rolling because the liner and lip are flush. Most of my other cars were like this. I'm not familiar with F30 specs to give you any advice on clearance issues. I have run NT01s though on some of my other cars. Great tire for the money, though I think some of the new street class tires are close to NT01 laptimes without the drawbacks of a R compound tire. I do think a 275 is too wide for 9.5" wheel though. You can do it, but you won't be taking advantage of the whole tire width on a 9.5" wheel. You'll probably want to run higher than normal psi to compensate for side wall rolling. You may actually get better lap time with a narrower tire on a 9.5". Stiffer sidewall and will probably weigh less. For example I ran a 255 square NT01 on my S2000 with a 9.5" wheel. Might have been a 9" wheel...it was long ago Just my thoughts and opinions. Good choice with the Swift springs. I ran them on my NISMO 370z with coilovers I went with Eibach springs for the KW setup as they seem to have the most spring travel when compressed. Car is scheduled to be in the shop this Friday for it's track spec special install Will update soon!
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11-28-2016, 06:48 PM | #28 | |||
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Looking forward to the next update!
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11-28-2016, 07:08 PM | #29 |
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What's the coding procedure to remove EDC for the adaptive suspension folks who want to remove it so we don't need the expensive EDC delete modules? Is there a DIY available?
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11-29-2016, 11:29 AM | #30 | |
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Not sure your experience with R comps, but if they are your first experience with them be prepared to be amazed Just make sure you have a dedicated track pad and fluid to go with them. They will kill any other setup in a heartbeat if you're pushing the tire anywhere near its limit. I think the ideal measuring width that manufactures list is a good starting point, but probably aren't based on laptimes or performance. They just use industry standards based on tire wear, road noise, DOT, etc. For track use I prefer to run a wider wheel than the listed "ideal" width. Usually 0.5" wider to a max of 1" depending on tire and car. Every car and setup is different though. Again, all my opinions.
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11-29-2016, 11:30 AM | #31 | |
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pikcachu can probably give you specifics on the software part.
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11-29-2016, 09:27 PM | #32 | |
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I like the sound of it so far, so now to read up on it's characteristics at the limit, grip profile as it wears, longevity, etc. I'm leaning toward the 265 size b/c compared to the 255, it's closer in overall diameter to OEM, and the max load rating is a good bit higher. You think the 265 will be faster on a 9.5" wheel than the 255?
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11-30-2016, 02:12 PM | #33 |
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Can't say for sure. Too many variables in play. Only one way to find out
I've always been a big proponent of fitting the widest tire you can fit, but wheel width has to be able to take advantage of it. Good article I just found looking at tires: As a general rule, Tire Rack recommends mounting Track & Competition DOT tires on the widest rim widths approved by the tire manufacturer (up to the widest permitted by the competition class rules). http://www.tirerack.com/tires/tirete...jsp?techid=233
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12-01-2016, 11:12 AM | #34 | |
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After doing some more research, I'm actually leaning back toward the Bridgestone RE-71R, as it has a pretty awesome reputation of running lap times compatible to the benchmark Nitto NT-01. <link> With this tire, there are a few options in the 255 and 265 range:
Tough to know which way to go... whether the lighter/smaller 255/35 stretched onto a 9.5" wheel would end up performing better than the comfortably mounted 265/35 with a bit of extra section/tread width.
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12-01-2016, 11:42 AM | #35 | |
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Smaller diameter tire will also get you slightly faster acceleration with reduced top speed. It's also lighter. 9.5" for a 255 is not at the max. You could do a 10" and still be in manufacture spec. For 265 I would try for a 10" wheel. Just thoughts. You could definitely be faster with a 265/9.5" with your setup and the tracks you run. I should have my 255/35/18's setup on tomorrow with a 9.5" wheel. I'll post pics for you so you can see how it looks with the re71.
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12-01-2016, 04:18 PM | #36 |
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Perfect! Thanks - I'll be looking forward to that
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12-03-2016, 12:56 PM | #37 | |
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Camber: 3* front 2.5* rear Do seem to have some coil bind in the front with the shorter eibach main spring. Only happens when first starting the car after it sits for a bit and reversing. (edit: no coil bind. It was rubbing which has been fixed). Also some minor pad knock with the Pagid race pads when going from reverse to drive and vise versa. Think it's because the pagid pads don't come with backing plates. Similar to my previous cars.
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12-12-2016, 12:04 PM | #38 |
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Just a quick note in case anyone ever tries a similar setup.
The 15mm spacer up front was not enough to clear the remote reservoir. It rubbed slightly with the wheels straight, probably just surface scratches that I could not hear when driving the car. At full lock though it ate into the reservoir pretty good. Luckily it didn't puncture while I was at the track Saturday doing a sustained ~125mph in turn 8 at Big Willow. Caught this while swapping the street pads back in and rotating the tires at home. Now seeing what the shop that did the install (and said my clearance was fine) can do for me. Ordered a 20mm spacer and it should solve the issue. So setup should be: 3* camber 18x9.5 +45 20mm spacer
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12-12-2016, 12:06 PM | #39 |
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Pics for the above post.
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12-12-2016, 03:47 PM | #40 |
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That sucks man. Those are some wide wheels up front! 8.5 is a good compromise all around with 245's. I think there is one guy that has a 255 with 8.5's square. Are you doing track days (HDPE's) or timed racing ?
I have a staggered setup still with OEM struts + GC camber plates, 235/40/18 on 8.5's front, and 265/35/18 on 9.5 rears. 3mm spacer in the front. Was the shop that installed them the same one you purchased them from ? |
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12-12-2016, 04:00 PM | #41 | |
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I'd rather keep the 9.5" wheel up front as discussed in my previous posts above. With a 20mm spacer it should be perfect. The shop did not properly check for clearance as I asked. Otherwise this would not be an issue. I've been taking my car to shops more and more to get work done, but when this stuff happens it makes me want to work on my own cars again.
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12-12-2016, 04:09 PM | #42 |
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20mm spacer is pretty large for a track car, i would prefer to have none! If you were showing your vehicle off downtown then whatever have 30mm to get them flush The more you push those tires out, the more strain on your OEM hub bearings. What brand spacers are you using? What length bolts do you have ?
Sometimes the risks outway the benefits, even if if you can do it! So are you doing HDPE's or actually doing timed racing ? Last edited by zipphreak; 12-12-2016 at 04:16 PM.. |
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12-12-2016, 04:31 PM | #43 | |
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H&R spacers. Track days and possibly Bimmer Challenge. This was the first shake down of the car. Always thought HPDE was a silly term. Think most use it for insurance purposes. Technically the larger spacer would wear out a the hub bearing faster, but so does running just a lower offset wheel. I'll bet my lower weight 9.5" wheel with a 20mm spacer does less wear than some of the heavy 8.5" low offset wheels people on here run. Also run hubcentric spacers and it should minimize the issue.
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12-12-2016, 04:36 PM | #44 |
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Hard to measure and challenge that I have 3mm H&Rs, they are like two credit cards thick..
You know what you doing, and have covered your bases. Let us know when you get it sorted. I want to try the Ohlins R&T's next year.. |
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