Quote:
Originally Posted by Lotus7
LEDZEP's comments are important. If the center bore is not correct, the wheels obviously won't fit and if the offset is not within spec, your steering geometry will be off.
FYI: Basic wheel specifications for the X3(F25) chassis are:
Bolt Circle = 5 X 120mm
Offset = 45mm (43 to 47mm acceptable)
Hub centering Bore = 72.5 mm (hub ring dia. = 72.47mm)
Bolts = M14X1.25 Spherical seat, 17 mm heads (Note the X3(E83) uses M14X1.5 bolts)
Minimum bolt engagement = 9.5 turns
The bolt engagement spec is very important and is often overlooked. Some wheels have different hub thicknesses, so use different length lug bolts. If the replacement wheels are even slightly "thicker", you need longer bolts.
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I'm using E83 oem rims as my winter tire setup. I'm looking for the lug bolts. I asked TR for a quote of M14 x 1.5 spherical seat 17 mm heads. The sales guy asked what the usebale lenght of the lug was. CAn an yone help?