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07-14-2019, 02:37 PM | #23 | |
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The BBS run around $3700 for a set... so its a middle ground between the Titan 7 and other more expensive brands.. The GT4 wheels run for around $2800 so not cheap either (well at least for me they are not..) I definitely agree the Titan 7 being the best bang for the buck and cannot see any other brand out there offering a forge wheel for that price. Not tracking my car.. just looking for a nice 18" aggressive set up. The GT4 wheels are just a tad too aggressive for me and I am not a fan of black wheels but I realize these are a track set up. Lowering the car on KW HAS.. If I get the BBS and have to special order I plan to go with a squared set up with varying offsets. 18x10.5 +25 F 275/40/18 18x10.5 +37 R 295/35/18 The easier staggered version is (but I am trying to confirm if the faces of the 9.5 version have less concavity... I know the 10.5 models have the most concave, these wheels look best at maximum concave). 18x9.5 +23 18x10.5 +37 The smarter choice from a money standpoint is definitely to pick up a set of Titan TS5s. I think these wheels look better on a sedan though than a coupe. That is my other hesitation to getting these. But I only plan on buying one set of wheels for this car and rather spend a little more since the GT4 look is what I think looks better on the car. thanks again for posting the pics. Really helps make the decision a bit easier. . |
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07-16-2019, 11:58 AM | #24 |
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So awesome to see this wheel getting fitted to the E9X platform! Tempted to snag a set myself
Just to keep this thread GT4 focused, Astro_train PM sent about a possible wheel set that may work for you!
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07-24-2019, 01:39 PM | #26 |
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The RIA versus the GT4 wheel is an interesting comparison. I happen to have both on hand right now. The GT4 wheel is surprisingly light, great bang for buck. BBS RIA build quality is better. It simply has more details to the design, it's forged, and about 1/2 lb lighter. EDIT - I believe that both wheels are forged based on my research on the manufacturer of the GT4 wheels
Fitting 10.5 on the front is not all that difficult. Fitting an 11 on the front is possible but does require a specific setup. I don't think -4 camber is required based on my testing. I'm at -3.3 and believe I can fit an 11" wheel in front with my camber and 295's. Pic of the two wheels side by side for comparison >>>> RIA vs GT4 by slicerM, on Flickr
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07-24-2019, 04:06 PM | #27 |
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I run 18x11's and 295/30-18 square on my car as the 'street' setup. Apex EC7 18x11 ET25, with a 5mm front spacer (3mm is not enough, 5mm leaves ~2mm clearance to the strut body.) -3 camber, KW Clubsports with 5.5" springs. Rubs on the fender liner when turning but no other rubs/issues.
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07-24-2019, 04:20 PM | #28 | |
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So what size of spacer would be needed to clear the stock calipers on an M3/M4 with on the GT4 wheel? No one seems to be able to post an exact size.. everyone just says 25 mm. If it is 25 mm one would be at +5 effective offset and with a 11 inch rim, that is pretty aggressive... if this is the case, to gain half an inch of wheel size isn't worth it so again, the BBS wheel would be the clear choice. and the RIA Is being discontinued.. so I was told.. is this accurate? Appreciate all the info Slicer. I am looking to have two sets of aftermarket wheels for this car for the next 3 years not including the stock wheels. I picked up a set of Titan 7s and the RI-As are at the top of my list as second choice.. I think they are a good middle ground for style, quality and price. |
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07-24-2019, 04:37 PM | #29 |
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275/35-18’s and 285/30-18’s both can be stuck on an 11. It’ll be stretchy but it’s in the standard rim width range for those sizes for most tire models, and ought to be pretty doable for most people fit wise
Poke dat rim son |
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07-26-2019, 12:20 PM | #30 |
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Brake clearance looks better on the BBS wheels, but that's just me eyeballing it.
Curious who is making these for BMW. Could it be someone like BBS, or is it one of the other OEM suppliers like Ronal, Wolf, Speedline, etc?
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07-27-2019, 10:41 AM | #31 |
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Is there any benefit to running an 11” wheel if you are still running 305 or less? Especially in the front where fit is a bit more difficult?
My understanding is for a 295 (or 305 pirelli which runs closer to other 295s) that a 10.5 is a better wheel choice? If you want to run the 315 in the back might not a staggered 10.5 front & 11” rear be a better choice? |
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07-27-2019, 01:20 PM | #32 | |
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I would look at the spec sheet for the tire you're running and see what they recommend. Every tire is a little bit different and the scrubs/R-comps seem to have a sweet spot. FWIW I run an 11" wheel with my 315/30R18s up front.
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08-02-2019, 11:03 AM | #33 |
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There's benefit. You'd have to test to know what it is. On the steer axle you want as much rim support as possible for whatever tire you have on it - but the tradeoffs you might make to get that support might not be worth it, which is why we have stopwatches
I wouldn't give up the possibility of rotating tires for a little more rear tire on a car that struggles to put down 250ft/lb of torque on a dyno, but that's me
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Last edited by Richbot; 08-02-2019 at 11:09 AM.. |
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08-02-2019, 06:26 PM | #34 |
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Yes. Look at the specific tire spec. For example a 280 Yokohama slick likes an 11" wide rim where a 300 likes a 12". Michelin slicks are similar. Obviously most tires don't require wheels that wide.
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08-08-2019, 02:50 PM | #35 |
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One step closer to testing the GT4 wheels on my e92.
295/30/18 Nankang AR1's installed M4GT4 by slicerM, on Flickr M4GT4 by slicerM, on Flickr
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08-08-2019, 04:20 PM | #36 | |||
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Sorry I just saw this post. My answers below.
Quote:
Quote:
Quote:
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08-08-2019, 04:22 PM | #37 | |
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08-08-2019, 04:28 PM | #38 | |
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http://superalloyengineering.com/company/profile/
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08-09-2019, 12:24 PM | #39 | |
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08-09-2019, 12:35 PM | #40 | |
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i'm running arc-8 18x10.5 et27's right now. while they have been great, they are gloss black and getting another gloss black set has been challenging. so i'm thinking the next time i'm in the market for track wheels, this might be a nice option. i'm also interested how the 295's fit up front since i'll likely have a similar setup once i get there.
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08-09-2019, 01:09 PM | #41 |
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The AR-1s are supposed to be a great track tire. There's been a ton of chatter and test info on one of the HPDE groups I'm in.
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08-09-2019, 01:38 PM | #42 | |
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I’ve been curious about them. The cost savings isn’t a ton, but it’s always interesting to see and hear about new stuff...
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08-09-2019, 04:10 PM | #44 | |
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https://www.facebook.com/groups/680392535693234/ Louis Gigliotti bought a container full of them and has been posting a lot of great feedback and data on laptimes from his race cars.
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