RPF1 8.5*17 +30 inner diameter
 

Just in case someone already measured that - what is the inner diameter of the RPF1 8.5*17 +30 rim? :) I have them fitted to my Evo and it is a little bit not convenient to remove them and check now.

Reason for asking - I've bought :mitsu: Alcon mono6 343mm front brake kit (the same one FQ400 is equipped with), which is advertised to fit stock Enkei rims. From what I can visually estimate, the axial clearance of my RPF1 over stock Brembos is more than that of stock rims. However, this may be not the case with radial clearance. :helpme:

I have a brand new set at home in the same size. I'll measure when I get home at about 4EST.

Just the inner diameter? Anything else?

That would be awesome. :thumbup: Inner diameter somewhere close to the inner side of the spokes (where the calipers are closest to inside of the rim) is all that looks uncertain to me atm. :confused:

Thank you very much, mate! {thumbup}{thumbup}{thumbup}

I checked with my guys here and they say it will interfere by 3.1mm. Not a good fit.

Thank you for care, Neal. :) Could you please tell a bit more about the point of interference? Is it radial dimension?

Np. Caliper is too large thus hitting the inside barrel of the wheel.

Am I right this is specific to the RPF1? :(

Asking because these same brakes definitely fit with stock 8*17 Enkei or 8*17 Team Dynamics that were fitted at FQ400.

Have you managed to check the inner size of the rim, jrank3792? :)

As of now I now that the inner diameter of the stock Enkei rims is ~400mm, according to the information from the Alcon official site overall diameter of the mono6 343mm brake kit is 386mm. So these things are quite close and looks like 5mm lip on the inner diameter of the rim (resulting in only 2mm of clearance between caliper and rim - I guess that is not good) may easily constitute a problem for the fitment. :o

Im sorry I totally forgot about this. I wont be home until tomorrow but will check tomorrow. I was a little rushed to leave town on Thursday. ill set an alarm so i remember.

The inner diameter of the wheel where the lip is measures 385mm +/- 1mm and from the inside of the wheel where it meets the hub to the lip of the wheel is 118mm +/- 1mm.

Thank's a lot, jrank3792! :) So it is 99% certain on all the above information that these rims won't fit over Alcon 343mm front brakes. :(

Thank you very much! {thumbup}

Just in case anyone finds the thread with the same question - definitive answer is 17' RPF1 will not fit over 343mm Alcon mono6 BBK. ;)