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03-19-2010, 04:38 PM
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#1
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1st Gear Newbie
Join Date: Mar 2010
Location: big island, HI
Posts: 3
Car: 89 325i
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miata bbs on a 89 325i?
question from a newbie, just purchased a 89 325i to replace a miata and wondering if the 15" BBS wheels will fit without any modifications/spacers. current tires are 195/50/r15 and am also curious about tire size affecting speedo. thanks in advance for the help
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03-19-2010, 05:00 PM
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#2
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Parts Hoarding Specialist
Join Date: Apr 2006
Location: Milton
Posts: 2,325
Car: '91 318i, '91 318is
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Nicely done! Car looks good! Take the cap off the BBS, and look at the stamping around the hub. I'm assuming those are 15" x 7"... if the offset (ET) is around 24-25 they'll fit fine... assuming they are 4X100 bolt pattern... or, you could just take 15 minutes and mount one. Your speedo will be pretty close. If your offset is around 30-38, you'll probably need spacers.
__________________
1986 E30 325e (killed)
1986 E30 325es (died)
1988 E30 325i (rotted)
1992 E34 525i (sold)
1992 E30 318i (cabrio, Dad's)
1989 E30 325i (Mom's)
1991 E30 318i (cabrio, summer car)
1991 E30 318is (Winter car)
1992 Euro M5 (driveway decoration)
1994 E36 325is (driveway junk)
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03-19-2010, 05:06 PM
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#3
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1st Gear Newbie
Join Date: Mar 2010
Location: big island, HI
Posts: 3
Car: 89 325i
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stamp says 15x6JJET45
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03-20-2010, 11:10 AM
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#4
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Parts Hoarding Specialist
Join Date: Apr 2006
Location: Milton
Posts: 2,325
Car: '91 318i, '91 318is
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So, for your 6" wide rims you should have closer to a ET30... ET45 will require spacers. Try mounting one to the front end, and you'll see the problem. You won't be able to get the rim flush to the hub because the spokes of the rim will hit your brake caliper first, and/or the tire will hit the strut tube. Either way, you'll need spacers.
__________________
1986 E30 325e (killed)
1986 E30 325es (died)
1988 E30 325i (rotted)
1992 E34 525i (sold)
1992 E30 318i (cabrio, Dad's)
1989 E30 325i (Mom's)
1991 E30 318i (cabrio, summer car)
1991 E30 318is (Winter car)
1992 Euro M5 (driveway decoration)
1994 E36 325is (driveway junk)
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03-20-2010, 01:12 PM
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#5
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6th Gear Member
Join Date: Feb 2004
Location: Port Perry
Posts: 7,110
Car: God's Chariot
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195/50/15 is a tad short. Your speedo will read a bit faster with that size. Stock is 205/55/15.
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03-20-2010, 05:51 PM
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#6
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1st Gear Newbie
Join Date: Mar 2010
Location: big island, HI
Posts: 3
Car: 89 325i
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hubs on miata bbs too small for bmw. bummer......
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03-20-2010, 06:42 PM
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#7
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Parts Hoarding Specialist
Join Date: Apr 2006
Location: Milton
Posts: 2,325
Car: '91 318i, '91 318is
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Shitty.
__________________
1986 E30 325e (killed)
1986 E30 325es (died)
1988 E30 325i (rotted)
1992 E34 525i (sold)
1992 E30 318i (cabrio, Dad's)
1989 E30 325i (Mom's)
1991 E30 318i (cabrio, summer car)
1991 E30 318is (Winter car)
1992 Euro M5 (driveway decoration)
1994 E36 325is (driveway junk)
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