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re: Plus-1 for E30 325i

Steve,
  I have 225/45 ZR16's on my wife's 1989 325iC and they fit fine. They have 
what I would call a "snug" fit in the wheel well. Any wider and it looks 
like you'll need to roll the fender out a bit to give more room in there. But
even with a +2 tire size, speedo readings shouldn't be more than 3.3% off 
(re the tiresize.c program). Here's how the +2's compare with the original
tiresize found on the car:

Specification  Sidewall  Radius  Diameter  Circumference  Revs/Mile  Difference
195/60-14         4.6in  11.6in    23.2in         72.9in        869        0.0%
225/45-16         4.0in  12.0in    24.0in         75.3in        841        3.3%

Hope this helps.

Best wishes,
Dwayne Paschall
[email protected]

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