Just curious to know if 235/55r-17 tires will fit on my 98 a4 1.8t. It has been lowered 1.5". The tires i have now are 215/45r-17. Any info would be appreciated.

 

If I'm not mistaken, the sizing works as such: The first number is the width of the tire in millimeters, the second number is the sidewall height as a percentage of the tire width, and the last number is the diameter of the wheel. So, assuming that's correct, 235*.55 = 129.25 mm tall sidewalls, while your last tires had sidewalls (215*.45 =) 96.75 mm tall. That's at least an inch and a half difference in height, on one side. I'd guess that they won't fit. And, the larger width might not work on your rims too.