Quote:
Originally Posted by PLF69
@Expert@ApexRaceParts
Did you guys get access to a car equiped with the track package (bigger front calipers and 374mm rotors) ?
Asking because officially they can only be cleared with 19inch wheels but discovered BMW makes a 18inch winter wheel that clears them. Just asking because you know as well as me that track tires are easier and cheaper in 18inch format.
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We haven't scanned these brakes yet from what I can see on our internal brake clearance sheets. So far we've scanned the base 330mm and M Sport 348mm brakes. If we have any volunteers willing to stop by for a clearance test in the Bay area running the ZTK package or the 374mm M Performance brakes, please let us know!
The initial wheels we will be producing for this chassis will be 19s so they shouldn't have any clearance issues even with that larger brake package, but we would still like to have a scan on file if we see enough demand for 18s.
Quote:
Originally Posted by GT3lover
Any hint for those planning to track M340ix from time to time?
Looking for the 18" set and planning to use 235or245 front and 265or275 rear tires, Nankang AR1.
My M340ix having bigger front calipers and 374mm rotors. Some guys managed to fit 18" OZ Ultraleggera and OZ Alleggerita. Any offering from Apex in 18" for this setup?
For those tracking M340ix, are you experiencing any challenge re Xdrive and different wheel size?
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No significant hints here beyond general advice. From what we've seen with xDrive we shoot for around a 1% or less difference in wheel and tire diameter between the front and rear axles and typically avoid having more than a 3% difference between the OE diameters and what you are moving to if possible.
Based on the survey feedback and customers that reached out, we will be launching with a staggered 19" setup first. Our 19x9.5 ET25 Supra wheel is actually a much better fit than we first thought, but it pokes a bit in the rear, and clearance around the front suspension is tight. We are doing more tire testing with that setup in the near future, but it may become our go-to square fitment for these cars once we dial in tire fitment.
If we see enough demand for 18s, we may produce them in the future but they are not currently in development.
-Tom