Frequently
Asked Questions
What size wheels
are required?  back
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Descriptions below are basic recommendations, but always
check the wheel fitment diagram for your application.
E46 3-series
'99-'05
330, 328, 325, 323 |
Minimum 17" x
7.5", standard offset. Some original wheels may
require 5mm-12mm spacers |
E36 3-series '92-'99
M3, 328, 325, 323, 328 |
Minimum 17" x 7.5", standard
offset. Some original wheels may require 5mm-12mm spacers. |
| E46 M3 |
Minimum 18" x 8", standard offset.
Some original wheels may require 5mm-12mm spacers. |
| E90/E92
3-series, 348mm front kits |
Minimum 18" x 8", standard offset.
Some original wheels may require 5mm-12mm spacers. |
| E90/E92
3-series / M3 380mm Mega front kits |
Minimum 19" x 8", standard offset.
Some original wheels may require 5mm-12mm spacers. |
| E90/E92
3-series / M3 380mm Mega front kits |
Minimum 19" x 8", standard offset.
Some original wheels may require 5mm-12mm spacers. |
| E60/E92
3-series / M5 380mm Mega front kits |
Minimum 19" x 8", standard offset.
Some original wheels may require 5mm-12mm spacers. |
Wheel fitment guides for
3-series/M3/Z3/Z4 (click to download ,pdf file):
E36/E46 front
4-piston/325mm rotor
Are spacers
required for wheel clearance?
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17" and larger original BMW wheels may need
spacers, and all aftermarket wheels we have test-fitted also fit
without spacers. Most aftermarket wheels have more clearance than
original BMW wheels. Use fitment guides linked above, print
out to life-size and fit within your wheels to ensure clearance.
What about caliper piston dust
boots? Are these required?
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Each piston has an internal pressure seal and dust
seal. These ultra-resilient seals minimize piston retraction so that
pedal travel is short, consistent and they are resistant to
knock-back. Since they are internal to the caliper, they are
shielded from the hi-heat that prematurely shortens the life of
competitors caliper seals.
Installation
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Installation is a very straight-forward "bolt
on" and can be performed by any competent automotive technician
following our simple installation guide. Minor trimming of the
heat shields is required, and rear kits may require grinding off a
small piece of non-structural excess casting flash on the spindle.
You can download the installation guides on the respective pages
for each application [ click here
]. Uses Adobe Acrobat .pdf format- download free Adobe reader,
click here: 
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