Login Register Sign up for the GRM e-newsletter

Login to post Forums » Grassroots Motorsports » Big tires on an E30, what wheel options?
  • June 25, 2010 10:31 a.m. JJGatesE30 None

    I am looking into upgrading from 225/50/14 hoosier A6's to the 275/35/15's. I am having trouble finding the right wheels that would work for this without having them custom made. I see there are some miata options out there in 15x9's but I dont know what offset would be needed. Using spacers would be ok, anyone have any ideas of what works?

    Thanks!

  • June 25, 2010 11:30 a.m. z31maniac Dork

    Spacers are touch, because the 6UL wheels in 15x9 would need something like a 35mm spacer to work. I believe you want right around ET0 for a 15x9 on an E30, though I'd have to double check.

    So you'd actually need 4x100 -> 4x100 bolt on type adapters.

    There are a few threads on r3vlimited.com and e30tech.com if you're willing ot search around a bit.

  • June 25, 2010 11:52 a.m. mndsm HalfDork

    Buy ones over offset, say -10 and have em milled down? Might actually be easier that way.

  • Ian F

    June 25, 2010 12:05 p.m. Ian F Dork

    This thread may give you some ideas:

    http://sccaforums.com/forums/1/421237/ShowThread.aspx

    (nutshell: he converted to E36 5-lug hubs so as to stay within Challenge budget and use some cheap 15x10 wheels he found)

    If cost is not a factor, I'd assume you'll have to go with one of the custom wheel vendors.

  • mw

    June 25, 2010 12:34 p.m. mw HalfDork

    15x8 0 offset Sportmax 002's? They are cheap

  • 2002maniac

    June 25, 2010 2:58 p.m. 2002maniac Reader

    15x8 et20 clears the strut perfectly, so you'd need 15x9et7 or 15x10et-5 to have the same clearance.

  • John Brown

    June 25, 2010 6:40 p.m. John Brown SuperDork

    I am installing 275/40r17 RT615s on a XX XXXXXX with 17x9 Drag DR31 from the Discount Tire. To keep my inner backspacing proper I went from a 17x7.5" +35mm wheel to a 17x9" +17mm wheel I am exactly the same inboard and 1.5" wider outboard.

  • 914Driver

    June 26, 2010 8:21 a.m. 914Driver SuperDork

    Diamond Racing Wheels.

    Light, cheap and powdercoated.

  • June 26, 2010 11:04 a.m. z31maniac Dork

    2002maniac wrote:

    15x8 et20 clears the strut perfectly, so you'd need 15x9et7 or 15x10et-5 to have the same clearance.

    True, but some additional clearance will be needed since the 275 is going to bulge a bit on the 9" wheel, right?

  • pres589

    June 26, 2010 11:45 a.m. pres589 HalfDork

    In reply to 914Driver:

    I didn't think those were really that light...

 
Tire Rack- Revolutionizing Tire Buying

You'll need to log in to post.