11-18-2015, 09:41 AM
I can tell you out of all the 15x9 options the 6ULs have the best rep in the Miata community. 949 just has the market cornered with the 6UL and they see tons of abuse in HPDE, TT/PT, SM, etc. I mean, any wheel can break if subjected to enough abuse - I know I've seen pics from people who smash into stuff and go "look, ma wheel broke!".
*HOWEVER the 6ULs did have problems with the gen 2 wheels. I had gen 2's. Never noticed any issues but I mostly auto-x'ed on them with 1 track weekend and 2 hyperdrives mixed in. A recommendation went out stating that gen 2's should be removed from track use. See more here:
http://winhpde.com/tech/miata/949racing-...ed-spokes/
I can't seem to find it now but Emilio @ 949 recently quoted the known failure rate out of gen 3's & 4's (I think they switched to a different factory for the later gens) and it was something like .0006%. His website does have a disclaimer stating that aluminum track wheels have a finite service life with details on how/when you should check your wheels. I think they're fairly honest on this point whereas other mfr's may not make light of that reality.
Edit: some info on the changes made from gen 1 through 4:
http://949racing.com/wheeltech.aspx
*HOWEVER the 6ULs did have problems with the gen 2 wheels. I had gen 2's. Never noticed any issues but I mostly auto-x'ed on them with 1 track weekend and 2 hyperdrives mixed in. A recommendation went out stating that gen 2's should be removed from track use. See more here:
http://winhpde.com/tech/miata/949racing-...ed-spokes/
I can't seem to find it now but Emilio @ 949 recently quoted the known failure rate out of gen 3's & 4's (I think they switched to a different factory for the later gens) and it was something like .0006%. His website does have a disclaimer stating that aluminum track wheels have a finite service life with details on how/when you should check your wheels. I think they're fairly honest on this point whereas other mfr's may not make light of that reality.
Edit: some info on the changes made from gen 1 through 4:
http://949racing.com/wheeltech.aspx
Current: '20 Kia Stinger GT2 RWD | '20 Yamaha R3 | '04 Lexus IS300 SD
Past: '94 Mazda RX-7 | '04 Lexus IS300 (RIP) | '00 Jeep XJ | '99 Mazda 10AE Miata | '88 Toyota Supra Turbo
My MM Movies - Watch Them Here
Past: '94 Mazda RX-7 | '04 Lexus IS300 (RIP) | '00 Jeep XJ | '99 Mazda 10AE Miata | '88 Toyota Supra Turbo
My MM Movies - Watch Them Here


