8th Generation Honda Civic Forum - View Single Post

maximus20895 · 08-25-2009, 06:03 PM

Tire Size Comparison

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
215/40-18 3.4in 12.4in 24.8in 77.8in 814 0.0%
225/45-17 4.0in 12.5in 25.0in 78.5in 808 0.8%

So according to this, the sidewall which is the part on the side (duh) that makes the gap looks bigger or smaller is actually .6 inches thicker or taller than on the 18's

08-25-2009, 06:03 PM	#6 (permalink)
maximus20895 Senior Member Join Date: Apr 2006 Location: Knoxville, TN Age: 22 Posts: 6,433 Max	Tire Size Comparison Specification Sidewall Radius Diameter Circumference Revs/Mile Difference 215/40-18 3.4in 12.4in 24.8in 77.8in 814 0.0% 225/45-17 4.0in 12.5in 25.0in 78.5in 808 0.8% So according to this, the sidewall which is the part on the side (duh) that makes the gap looks bigger or smaller is actually .6 inches thicker or taller than on the 18's