18x9. 5", 38mm (as you have stated you'll be purchasing) with 245/40-18's. I think I could get away with 255/35's, but wider means more rolling resistance, and a shorter than stock tire means false mileage quicker than the stock height.Jul 28, 2019
What size tire fits a 9 inch rim?
Rim width Minimum tire width Maximum tire width
---------- ------------------ ------------------
8,0 Inches 215 mm 245 mm
8,5 Inches 225 mm 255 mm
9,0 Inches 235 mm 265 mm
9,5 Inches 245 mm 275 mm
Rim width Minimum tire width Maximum tire width
---------- ------------------ ------------------
8,0 Inches 215 mm 245 mm
8,5 Inches 225 mm 255 mm
9,0 Inches 235 mm 265 mm
9,5 Inches 245 mm 275 mm
What size tire will fit a 9 inch rim?
Rim width Minimum tire width Maximum tire width
---------- ------------------ ------------------
8,0 Inches 215 mm 245 mm
8,5 Inches 225 mm 255 mm
9,0 Inches 235 mm 265 mm
9,5 Inches 245 mm 275 mm