01-16-2020, 08:13 PM | #1 |
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BBS FI-R tire sizes
For anyone running BBS FI-R's, what tire sizes are you using to avoid rubbing ? I know the wheels have an aggressive offset, and I have seen some M2 owners running stock tire sizes on these wheels, which seems like they would look quite stretched. Any input is appreciated, I posted this in the wheel and tire sub forum, but didn't get much response.
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01-16-2020, 09:29 PM | #2 | |
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https://f87.bimmerpost.com/forums/sh....php?t=1268078 |
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01-17-2020, 12:30 AM | #3 | |
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Thank you. I saw that post previously, and its the only FI-R post I've found so far, and he eventually went to stock tire sizes after trying larger. Looks like if you have a lowered M2 with these wheels, OE tire sizes are the safest option.
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01-17-2020, 04:31 PM | #4 |
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Not really, you can go larger, you just have to consider the specs very closely. I don't see any reason why 255/285 can't be used. I mean, you might have to tweak it a bit, but that's part of the fun. Just make sure you're checking the specs because there can be quite a big difference between a 285 Summer, 285 All Season, and 285 Streetable Comp tire.
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01-22-2020, 09:24 PM | #5 |
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275/255
Slightly lowered on Ohlins, installer didn't feel comfortable going lower due to potential to rub. I haven't taken it off any jumps or anything, but no rubbing during spirited driving. |
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01-23-2020, 12:01 AM | #6 |
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I ran this same tire size, 275/255 with M Performance coils when I had the FI-Rs. No rubbing, but it was quite close.
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03-23-2020, 05:01 PM | #7 |
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01-25-2022, 12:37 PM | #10 |
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For anyone finding this thread in future searches, this is what I've found with regards to rubbing and tire fitment on the FI-R.
Some people experience rubbing in the front at full lock with even the OEM 245/35/19 star-spec PSS. This is down to the tire being unusually wide for a 245 at 8.8 inches, because most245's are 8.2 to 8.6 inches wide. This is also mostly reported with stock height cars. Lowering the car creates a bit more negative camber and therefore more room on the outside. The first two pictures below are of cars wearing 255/35 & 275/35 Bridgestone Potenza RE71R tires (NLA), and they do not experience rubbing. These tires are known to run wide at 9.3 and 10 inches wide respectively, but as you can see the cars are very low (and the black car may have additional front negative camber via camber plates). The last two pictures are of a car wearing Toyo Proxes R888R tires (same as the black car above, but earlier in its life), which are also known to run very wide, in 265/30 and 295/30. EAS told me that the front is cambered to work with this size, but no mention about the rear, so I assume they fit fine just being lowered. These tires are extremely wide at 10 inches in the front and 11.3 inches in the rear. My brother swears by the Firehawks he has, so I am considering them in the 265/30 and 285/30 sizes once the car is lowered a little more, and will report back with my findings. |
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02-04-2022, 10:08 PM | #11 |
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I have BBS FI-R’s on my M2C, I was running OEM tire sizes but ordered 265/30/19 and 285/30/19 Michelin Pilot 4S’s. I plan on installing Millway Camber plates and Track Tec camber lock outs to dial in camber.
I will post pics when I install them.
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02-04-2022, 11:05 PM | #12 | |
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And although the 265/30 PS4S is .8" wider than the stock 245/35 PSS, it's also .5" shorter, so dropping the car in the front to compensate for the difference, the increase in negative camber alone may keep you from rubbing the outside. Very stoked to see this on your car! |
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02-12-2022, 06:11 PM | #13 |
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The Rears finally came in, will have them installed on the FI-R’s next week.
I am not sure why it ended up sideways lol
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02-19-2022, 10:53 AM | #15 |
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265/30/19 and 285/30/19’s installed.
Findings so far, the 265/30/19 front has more room in the fender liner compared to the OEM set up with 10mm spacers during full lock. I haven’t driven on the set up yet (only in my neighborhood), I am waiting to install the Millway camber plates. I am sure the front will require about 2.5-2.8 negative camber up front to avoid rubbing fender/bumper tab during compression. It currently has -1.8 camber front. The rear 285/30/19 have a rounded sidewall but look wide in person and do extend past the wheel, rears appear to have plenty of room. I will be installing Track Tec rear camber lockouts to dial in rear camber, I will add just a touch of rear camber, it currently has -2.1 camber rear. In the photos it was just removed off the Jack and the suspension had not settled yet.
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02-19-2022, 05:43 PM | #16 | |
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02-21-2022, 03:04 PM | #17 | |
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I'd love to know your ride height at the moment, and also how much it rubs/where it rubs if just driven normally. Like the user above, I'm not getting camber plates. |
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02-22-2022, 07:44 AM | #18 | |
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I haven’t been driving the car, one wheel is getting refinished at a shop recommended by BBS themselves. So only the driver side wheels are on, the front will need camber plates to avoid rubbing on compression.
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02-22-2022, 07:56 AM | #19 | ||
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Thank you. It'd be the outer shoulder then. You're at -1.8° now and plan to go -2.5°? |
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02-22-2022, 10:52 AM | #20 | |
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BBS recommended Proformance Industries in New York. They had a set of FI-R’s from a Porsche that they had just refinished with the same issue. I am hoping to have the wheel back by the weekend. I am going to run at least -2.5 camber up front.
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02-22-2022, 10:59 AM | #21 | |
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Yes, I've been working on a solution for the stones. Without one, it'll just happen over and over, and get worse. The top coat on the Diamond Black and Platinum Gloss is paint mixed with clear to let the base coat shine through. If you look very close you can see the finish is almost speckled. Because of this they don't clear the wheel afterwards, which is questionable with such an expensive wheel. Mine are coated with C5 wheel armor, but that causes its own issues if the finish is damaged. More pix if you get bored |
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02-22-2022, 11:30 AM | #22 |
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For reference.
Diamond Black FI-R with 255/35 & 275/35 Yokohama V601 tires, 595/600 ride height. No rubbing at all. I'll be dropping the car to 585/590 as soon as my rear springs come in. |
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