Quote:
Originally Posted by DSC_OFF
thats weird b/c when i used the wheel offset calculator here:
http://www.e90post.com/forums/forumdisplay.php?f=12
i put in oem settings of: 8.0", et 50, 225/40/18
new wheel: 8.5", et 42, 255/35/18
and it spits out: "2mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 14mm" |
The formula calculates only the effect of wheel width and not counting the tire tread width. It should have calculated both and give the "greater" of two.
For example you put
OEM setting 8", et 42, 225/40/18
New super wide tires (on the same wheel) 8" , et 42, 295/30/18
It says "same clearance" which is WRONG.
We know the tire width will extend more to both inside and outside , but formula ignores the tire width and only reported the tire diameter effect.