235 and 225 are the width of the tires in millimeters.  So 235 is 10 mm wider than 225.To further explain:Tire sizes are normally listed in 3 numbers.The first number is simply the width of the tire in mm.The second number is sidewall height as a percentage of the width.The third number is the diameter of … Read more

235 is slightly wider than the 225, only 10 mm wider.  So as long as you have clearance in your wheel well, you should be good to go. =)