Quote:
Originally Posted by bipp
I'm a fan of the RI-A - I have them on my car, and when it comes time to get a second set so I'm not driving my track tires on the street, I'll likely get another set. They're light and affordable for what they are, and come in a great variety of sizes that fit the E92 (18x10 ET25, 18x10.5 ET25, 18x10.5 ET22, and 18x11 ET37 - as well as a fitment that works for square setup with spacers on F8x). There is also a "blue black" finish that I want - though I'll likely just end up getting another set of Diamond Silver (also known as matte gray, if I don't clean my wheels for a week).
If you're solely looking for 19" options though, the RI-D is probably the most baller option you can get. They won't do much to hide the OEM brakes, but they're one of the lightest options - 17.4 lb for the 19x10 if I recall correctly. They are also made of duralumin, instead of the forged alu for the RI-A. Just a very, very steep cost - but you do get what you pay for.
- https://www.m3post.com/forums/showthread.php?p=10596546
- https://www.m3post.com/forums/showthread.php?t=2096770
Knowing you though - if you for whatever reason decide to go chasing a rabbit hole of grail NLA wheels, the iND / RKP BBS FI (18") and BBS FI (19", not the FI-R) would suit the car amazingly as well. |
Duralumin is just 2000 series aluminum which has a higher copper content. It was once widely used in the aerospace industry but it’s a Table III material (highest susceptibility) when it comes to stress corrosion cracking. 7075-T7351 has been used in its place for quite sometime now. I’ve seen complex parts machined from 2024-T62 that literally failed from just supporting their own weight. A table III material must have sustained stress levels < 30% of the yield strength. It requires special waivers and additional detailed stress analyses to be able to use a table III material. Aluminum 7050-T7451 was classified incorrectly as being a table III material but is used when parts have to be machined from plates > 3”-thick (3-6”) because 7075-T7351 has too much residual stress in the middle of a plate > 3”-thick. 7050-T7451 is widely used but it’s extremely expensive. High strength aluminums tend to have low/poor elongation (ductility) in the short transverse (ST) direction.
The HRE R101LW 19x9.5et22 weighs 16.6 lbm and the 19x11et42 weighs 17.4 lbm. The RI-A and FI-R are awesome looking wheels. IMO, the RI-A looks better on an e9X M3 than the FI-R. I wonder at times why popular wheels are discontinued by manufacturers when theres still demand for them. Does BBS manufacture a discontinued wheel if an owner damages a wheel(s) and is in need of a replacement(s)?