New 15x8 wheel coming!

[Brian D]

There are only a few 225/45s in existence, and the 225/50s are all around 28.5" overall diameter. I wanted to stay down in the 26" range.

A 225/50r15 is 24" diameter.

[Massive Lee]

I got the word from somebody who contacted TR that despite having a lot of room in its perimeter, the wheel has a glitch in the center, near the hub. The spokes, near the hub are seem to be portruding and touching calipers from a 15" BBK. I asked to get a profile from the 15" x 8" wheel(s), and check by myself.

Lee

[nefarious7907]

225/50/15 should fit fine and should be in the 23.5-23.9in range, and I know they will fit with slightly rolling the fenders on lowered e30's.

[Knockenwelle]

Yep, you're right on the rolling diameters. I was going from memory. At any rate, the difference was almost 2"

Lee- I'm using stock calipers with Brembo blanks for now. Shouldn't be a problem, right? I know I'll need bigger wheels for bigger brakes.

I'm hoping 225s will fit with no fender modication with -3 deg camber and coilovers. I can already fit almost 3 fingers between the tire and the fender with 205s...

[Massive Lee]

Lee- I'm using stock calipers with Brembo blanks for now. Shouldn't be a problem, right? I know I'll need bigger wheels for bigger brakes.

I think that stock brakes will work allright.

[GotCone?]

There are only a few 225/45s in existence, and the 225/50s are all around 28.5" overall diameter. I wanted to stay down in the 26" range.

Oh, and markseven, mine's a red 91i, with an iS lip too. Hehehe...

Where are you seeing this data? most any 225/50-15 will be 24" or less diameter.

[Massive Lee]

225mm at 50 ratio is 112.5mm per shoulder x 2 = 225mm of shoulder (top and bottom).

If 25.4mm = 1" ---» then 225mm = 8.86"

Therefore a 225.50.15 tire will have the theorical height of 15" + 8.86" = 23.86"

Following the same calculus, a 225.45.15 tire is 22.97" tall

[JRKOUPE]

225mm at 50 ratio is 112.5mm per shoulder x 2 = 225mm of shoulder (top and bottom).

If 25.4mm = 1" ---» then 225mm = 8.86"

Therefore a 225.50.15 tire will have the theorical height of 15" + 8.86" = 23.86"

Following the same calculus, a 225.45.15 tire is 22.97" tall

I was wondering when some1 would post this...figures it would be Lee!!!!

Ive met many many dudes that "know" cars...and could never do this math.

[nando]

I was wondering when some1 would post this...figures it would be Lee!!!!

Ive met many many dudes that "know" cars...and could never do this math.

that's because most people think the aspect ratio is a direct measurement in MM.

[GotCone?]

225mm at 50 ratio is 112.5mm per shoulder x 2 = 225mm of shoulder (top and bottom).

If 25.4mm = 1" ---» then 225mm = 8.86"

Therefore a 225.50.15 tire will have the theorical height of 15" + 8.86" = 23.86"

Following the same calculus, a 225.45.15 tire is 22.97" tall

now if only the tire manufactures followed this.

always check manufacturer spec as there are many variances even with in the same brand across models. Width & diameter varies quite a bit

[JGood]

now if only the tire manufactures followed this.

always check manufacturer spec as there are many variances even with in the same brand across models. Width & diameter varies quite a bit

Yup, like Hoosier R6 225 = Victoracer v700 245 in tread width.

It all depends what the manufacturer considers "usable tread". I guess Kumho thinks the sidewalls are part of the tread, and Hoosier thinks the tread stops 1/2" before the edge of the tire...

[MDryVur]

whatever happend to these wheels.. will they be available in gold.

[Elephant]

I've not kept up with checking on these as it's been so long. I believe they are soon to be available though, I received a pic of a real wheel that has arrived but not sure on how many and what sizes might be available. Tire Rack site says 12/24, best bet is to call them. You can ask for Bernie if you don't have a contact.

They will not be available in gold. Unless something changes I'm pretty sure they are only coming in the carbon gray.

Cheers.

[bmwpower]

Looks nice!

[kishg]

glad these are finally coming. tks jack for getting this going.