BBS FI-R vs. RI-D

[ShePearl]

Hi folks.

I'm currently deadlocked between these two BBS wheels for my F82 M4.
Fi-R vs. RI-D

Which one should I get ? (Any why?)
Your opinion would be greatly appreciated.

[MasterP]

The FI-R is marginally lighter than the RI-D.

But that being said I'd rather have the RI-D. I think it looks better and because the relief holes in the FI-R the rim face can't be as concave as the RI-D. Plus they're less common.

[Info@Ashera]

You can narrow it down by choosing color you want. The FI-R offers in Platinum Silver & Satin Black and the RI-D offers only in Diamond Black which is common color for BBS.

[Kr3st]

I'm sure this won't help as it's an M3 and you have an M4, but here are photos of my car.

[ShePearl]

Thanks for the input, folks.

Kr3st, beautiful photos.
Are you running the stock PSS (255 front, 275 rear) tires on those FI-R (9.5 front, 10.5 rear, right?) ?

[qspring]

I picked up the FI-Rs last week. I like the look of the relief holes and the offsets are perfect for the F82.

Also, Ive been told FI-R can be ordered with custom color if you submit a swatch.

Either way, you can't go wrong with either rim.

[Kr3st]

Originally Posted by evo2point0

Thanks for the input, folks.

Kr3st, beautiful photos.
Are you running the stock PSS (255 front, 275 rear) tires on those FI-R (9.5 front, 10.5 rear, right?) ?

I'm running Michelin Pilot Super Sports
19x9.5 275/30-19
19x10.5 295/30-19

[ShePearl]

Originally Posted by Kr3st

I'm running Michelin Pilot Super Sports
19x9.5 275/30-19
19x10.5 295/30-19

Thanks.
I think I'll use the stock PSS (255 and 275) on the 9.5 and 10.5 BBS wheels.
Would it cause any problems?

[lsturbointeg]

Originally Posted by Kr3st

I'm sure this won't help as it's an M3 and you have an M4, but here are photos of my car.

Nice!!!!!!!!!!!!!!!

[Kr3st]

Originally Posted by evo2point0

Thanks.
I think I'll use the stock PSS (255 and 275) on the 9.5 and 10.5 BBS wheels.
Would it cause any problems?

It shouldn't cause any problem. I just like the beefier look.

Originally Posted by lsturbointeg

Nice!!!!!!!!!!!!!!!

Thank you, sir!

[Blksnowflake]

Very similar issue. Anyone have pics of the Rl-Ds on an F80/82.

[remmib]

Originally Posted by evo2point0

Hi folks.

I'm currently deadlocked between these two BBS wheels for my F82 M4.
Fi-R vs. RI-D

Which one should I get ? (Any why?)
Your opinion would be greatly appreciated.

19" or 20", I think it's fascinating that the RI-D is made of 7000 series aluminium.

[ShePearl]

Originally Posted by remmib

19" or 20", I think it's fascinating that the RI-D is made of 7000 series aluminium.

19"

[Lister]

And my 2 cents FI-Rs in Platinum Silver on my F80 MG

[ts-m5]

Hi, I'm new here and posting for the first time.

I ended up getting set of 19 inches RI-Ds because BBS in Japan isn't offerring satin black FI-R.

[IBFreeman]

Originally Posted by ts-m4

Hi, I'm new here and posting for the first time.

I ended up getting set of 19 inches RI-Ds because BBS in Japan isn't offerring satin black FI-R.

They both look good on there. I can see the dilemma. Not even sure weight would sway me one way or the other.

[SeanWRT]

The primary difference is in the material.

RI-D uses the superior 7 series aluminum alloy which they trademark as Extra-Super Duralumin (which requires a different forming & forging process that very few in the world master) while FI-R is the normal 6 series.

FI-R fitment is very limited having to accommodate holes on the spokes. RI-D is much more flexible (tons of fitments) so deeper concave is possible if desired.

Design wise, FI-R spokes are noticeably sharper viewed from most of angles. RI-D is softer by comparison and flows a bit more.

The finishes that's been available at this point:
FIR - Diamond Silver (DS) and Diamond Black (DB).
RID - Diamond Silver (DS), Diamond Black (DB) and Matte Black (MB).
Don't let your dealer fool you. Other finishes can be specially ordered. Even frozen gold is optional should you give it a 3 month wait.

Both rims are ultra lightweight. Below is the weights of their comparable 19" fitment for F8X (front is still different in ET).
FI-R
FI137 19×9.5 22 5/120.0 72.5 7.5kg (16.5lbs)
FI138 19×10.5 35 5/120.0 72.5 8.1kg (17.8lbs)
RI-D
RI031 19×9.5 25 5/120.0 PFS 7.9kg (17.4lbs)
RI033 19×10.5 35 5/120.0 PFS 8.3kg (18.3lbs)

FI-R is easier to mass produce. As a result North America and Europe dealer networks carry way more FI-Rs. RI-D has always been made to order and thus is more exclusive worldwide. However, in Asia Pacific area, the popularity of the two rims in the F8X market are about equal.

[THEROK]

Originally Posted by SeanWRT

The primary difference is in the material.

RI-D uses the superior 7 series aluminum alloy which they trademark as Duralumin (which requires a different forging process that very few in the world master) while FI-R is the normal 6 series.

FI-R fitment is very limited having to accommodate holes on the spokes. RI-D is much more flexible (tons of fitments) and also can have a deeper concave if desired.

Design wise, FI-R spokes are noticeably sharper viewed from most of angles. RI-D is softer by comparison and flows a bit more.

The finishes that's been available at this point:
FIR - Diamond Silver (DS) and Diamond Black (DB).
RID - Diamond Silver (DS), Diamond Black (DB) and Matte Black (MB).
Don't let your dealer fool you. Other finishes can be specially ordered. Even frozen gold is optional should you give it a 3 month wait.

Both rims are ultra lightweight. Below is the weights of their comparable 19" fitment for F8X (front is still different in ET).
FI-R
FI137 19×9.5 22 5/120.0 72.5 7.5kg (16.5lbs)
FI138 19×10.5 35 5/120.0 72.5 8.1kg (17.8lbs)
RI-D
RI031 19×9.5 25 5/120.0 PFS 7.9kg (17.4lbs)
RI033 19×10.5 35 5/120.0 PFS 8.3kg (18.3lbs)

FI-R is easier to mass produce. As a result North America and Europe dealer networks carry way more FI-Rs. RI-D has always been made to order and thus is more exclusive worldwide. However, in Asia Pacific area, the popularity of the two rims in the F8X market are about equal.

-Any real data comparing stiffness/strength comparing the two wheels?

-What makes the RI-D and its 7xxx series al "superior" as compared to the FI-Rs?

Last I checked, the "easier to mass produce" FI-Rs in 20s have been on backorder for months as they're manufactured in the same plant as their motorsport wheels which take priority.

Interested to learn more about BBS no-BS backed by facts. Thanks.

[SeanWRT]

Learn about Duralumin
https://en.m.wikipedia.org/wiki/Duralumin
https://www.azom.com/amp/article.aspx?ArticleID=8073

On top of the already stronger and lighter duralumin (than aluminum), BBS further tweaks the copper % to find a bit extra strength and call it extra-super duralumin. There're 3 models from the lineup made of that material - RI-D (top dog), RZ-D (busy design and conservative fitments made for less performance oriented vehicles) and FR-D (BMW I8 only).

BBS range topping Street Wheels now have been FZ-MG (magnesium tech), RI-D (extra-super duralumin and lightweight design) and FI-R (extreme lightweight design).

[THEROK]

I'm looking for something more than google search or nerd out where possible.

I'd love to know if anyone has access and is willing to share exactly how strong/stiff these wheels are by comparing side by side with real data.

Data shows the FI-Rs are lighter than the RI-Ds like for like and not by a totally insignificant percentage (nor material).

Does anyone know if their motorsport wheels are made with this patented Duralumin metal? In appearance, they definitely look more like the RI-Ds than FI-Rs.

[SeanWRT]

Originally Posted by THEROK

I'm looking for something more than google search or nerd out where possible.

I'd love to know if anyone has access and is willing to share exactly how strong/stiff these wheels are by comparing side by side with real data.

Data shows the FI-Rs are lighter than the RI-Ds like for like and not by a totally insignificant percentage (nor material).

Does anyone know if their motorsport wheels are made with this patented Duralumin metal? In appearance, they definitely look more like the RI-Ds than FI-Rs.

There is so such data unless someone does a destructive test side by side - no one would do that just to prove one thing is better than another.

BBS Motorsport is Magnesium.

BTW, here is the Wheel Emblem pricing list from BBS 2018 catalog, which in a way reflect BBS hierarchy:
Magnesium (Mag) and Duralumin (Dura) for 6k Yen each, a clear sign of their superiority.
Normal aluminum for 4k Yen each. Blue for JDM, Black for NA and Red for Europe. Generally speaking.

[TRYM3]

LOL sorry--- "Full-penetration steel nuts"