Tire size differences?
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,705
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From: Chesapeake Beach Maryland
2015 C5 of Year Finalist
Tire size differences?
What is the difference between 285/40/17 and 275/40/17 ?
I currently have the 275's on all four 9.5" A-mold rims. What difference would the 285's make?
Don Haller, Rockville MD
I currently have the 275's on all four 9.5" A-mold rims. What difference would the 285's make?
Don Haller, Rockville MD
Burning Brakes
Joined: Jan 2003
Posts: 784
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Originally Posted by biggrizzly
What is the difference between 285/40/17 and 275/40/17 ?
275 is the width in mm/ 40 means 40% of the width is your sidewall height/ 17 is the size of rim in inches
The 285 will be 10 mm wider ( or one centimeter) and a tiny bit taller, absolutely safe to upgrade to with no worries of clearances. I have them on all four corners of my Vette, fits the 9.5 inch rim with no worries. And you can rotate tires front to back, to wear them out evenly.
