imstimpy

sillyboybmxer

If you guys are saying you are rubbing the fender in the rear with 17x9 +63 and 255s it sounds like it is as simple as running more camber or rolling the fender more.
I dont rub with 255s on 17x9 +45 or 17x9.5 +47 and the 17x9 +55 949 is offering is less aggressive

949Racing

Frankly, I'm baffled at the suggestions that a +55 will rub outside in the rear with or without camber running 255/40. Or discontinued 17x10 +72 was only 4mm further in and had miles of room outboard on an unrolled rear fender.. with 275/40 that is 1.5" wider. The 10" +52 is 16mm further outboard and fits unrolled rears, barely. The 17x10 +52 front just barely clears and unrolled fender, with race camber.

imstimpy

I am not rubbing in the rear with a +63 under normal driving or racing conditions. I have rubbed the sidewall when the car was strapped to the trailer. Here we can see compression on course that is equivalent to what I see on the trailer:

This photo was taken today with my race wheels, on the race alignment, at race height, after driving into work. The ruler is showing 2/8" (6mm) between the edge of the tire and the inside of the rear fender. The wheels are 17x9+63 6ULRs on BFG Rival S 255/40-17s, the alignment is -3.0* and 1/16" (0.16*) per side, and the height is 12.5" hub center to fender.

Ricky_Flowers_

http://winhpde.com/tech/miata/949rac...heared-spokes/

http://www.cicenet.net/showthread.php?t=12231

A little googling, and I found these two confirmed cases of complete failures, and a good amount of instances where the wheels would bend from track driving. This includes the 6ULs and 6ULRs. Food for thought.

iamxpl

hmm all those broken wheels seem to all be with the 4 bolt pattern, any instances of this happening to the 5 lug ones? just wondering

949Racing

None that we are aware of. Keep in mind, if someone experiences a problem with on of our wheels, the first thing they do is post to facebook or instagram. The second thing they do is contact me for a replacement. Again, no reports of any 17", 6ULR or gen 3 cracked. Just a handful of Gen 2's which were replaced during the one year warranty period. Wheels outside of warranty period were not replaced.

Ricky_Flowers_

It seems like the majority of issues have been with the first and second run of 6ULs, with the main structural deficiencies having been addressed in the subsequent runs of 6ULs. However, I have seen bent 6ULRs (MX5/S2000 fitment) from regular track use. The only failure I've seen in person was on a 15x9 6UL failing at Sebring, which is a pretty rough course, quite a few years ago. I'm sure if you ask around you'll find more first-hand accounts of failures.

Of course, this can happen to any wheel, and they are considered wear items for cars that see road course use regularly, but there shouldn't be so many failures, so regularly, and when the wheel is so new. My two cents.

Edit: this isn't to say I'm not interested in these wheels, because I most definitely am, but I will wait a few years and see how they're holding up. When it comes time to replace my Enkeis, I'll reevaluate. I do hope that these develop a good track record, as the sizing is ideal for someone looking to run a 245 Hoosier.

sweetdill

A handful? I've personally seen a handful go at the same Speed Ventures driving event, and I remember there being a 949 Racing contingent there that day.

Here's Rob's Gen 3 that he contacted 949 about, and wasn't replaced (Rob swears 949 told him that the wheels are not meant for track use):


I can't believe 949 Racing aren't aware that Gen 3's are cracking, and if they truly didn't know, then now they do, so they can quit the B.S.

I surely wouldn't want to be among the poor saps guinea pigging any new product from 949 racing.

Ricky_Flowers_

Yeah, f@#k that, I'm out. Another set of Enkeis for me, then.