Quote:
Originally Posted by xoutpostking
The sidewall of your tires are too fat, it should be 275/40. Check the numbers at the BMW site. Your speedo is therefor, off.
Black rims always appear smaller than they actually are, so for a 20" to look 20" you must get 21" or 22".
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I agree with the tires looking too fat. That adds to the wheels looking too small.
But as for the speed error, yes it's off, but by 3.8%. I think it's somewhat commonly known that BMW speedo's are off by a few miles per hour faster than actual. Case in point, my radar detector shows actual speed. When My X5 speedo says 80MPH, the radar detector shows 76.
Because of his tire sizes, he may be closer to actual values that you or I, lol.