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15x4.5 3.5bs fitment

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Old 05-07-2012, 11:07 AM
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Default 15x4.5 3.5bs fitment

I just got a great deal on a set of prostars 15x10 7.5bs in rear and what I belive to be 15x4.5 3.5bs for the fronts... The Rears are on with grinding and a little bfh.. I tried the fronts and realized there's brake clearance issues even with a 1/2" spacer.. I've read through a lot of threads and noone seems to have posted this situation to my knowledge.. if anybody out there has installed these wheels before enlighten me on the process if possible.. there being installed on a 99 z28 and I'm down to grind if its been successful before...
Old 05-07-2012, 06:03 PM
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Originally Posted by 99YENKO
I just got a great deal on a set of prostars 15x10 7.5bs in rear and what I belive to be 15x4.5 3.5bs for the fronts... The Rears are on with grinding and a little bfh.. I tried the fronts and realized there's brake clearance issues even with a 1/2" spacer.. I've read through a lot of threads and noone seems to have posted this situation to my knowledge.. if anybody out there has installed these wheels before enlighten me on the process if possible.. there being installed on a 99 z28 and I'm down to grind if its been successful before...
Too much backspacing on the fronts for them to fit
Old 05-07-2012, 06:15 PM
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So basically way too much grinding and or spacer for them to work?
Old 05-07-2012, 06:17 PM
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Are there brake calipers that will fit the stock spindle that will clear?
Old 05-07-2012, 08:07 PM
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I'm just gonna sell the fronts I have now and buy some matching 15x4 1.75bs wheels to avoid the hassle.. thanks for the help..
Old 05-08-2012, 11:10 AM
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I ran 15x4s with 2.25" backspacing and had to grind the calipers and still run a spacer but they worked.

I highly doubt LT1 brakes will clear that backspacing




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