Speedo recalibration needed when installing 1LE wheels and tires? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

crit · 05-08-2016, 11:26 AM

I have a 2010 SS and I'm putting on 1LE wheels and tires. Supposedly the 285/35/20 tires are about .8" smaller in diameter than what comes stock on the SS. Has anyone recalibrated their speedo after installing this setup?

KillboyPowerhead · 05-08-2016, 06:45 PM

They say that if you're within 3% of the original tire diameter then you're fine (60 mph would read 58 mph or 62 mph, depending if you go smaller or bigger). 285/35's are less than 3% smaller than the original so the speedo error will be minimal, so if it's going to cost extra $ to calibrate it then, personally, I wouldn't bother.

05-08-2016, 11:26 AM	#1
crit Drives: 2010 Transformers 2SS M6 Join Date: Feb 2016 Location: San Jose Posts: 69	Speedo recalibration needed when installing 1LE wheels and tires? I have a 2010 SS and I'm putting on 1LE wheels and tires. Supposedly the 285/35/20 tires are about .8" smaller in diameter than what comes stock on the SS. Has anyone recalibrated their speedo after installing this setup?

05-08-2016, 06:45 PM	#2
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 931	They say that if you're within 3% of the original tire diameter then you're fine (60 mph would read 58 mph or 62 mph, depending if you go smaller or bigger). 285/35's are less than 3% smaller than the original so the speedo error will be minimal, so if it's going to cost extra $ to calibrate it then, personally, I wouldn't bother.