Service Engine Light after new tires/wheels?

solteroblues · 10-27-2016, 12:00 AM

I've searched the site and came up with less than nothing...

I had new wheels/tires installed today, and as soon as I drove out of the tire center, I noticed the service engine soon light came on. They were closing so it was too late to go back.

FYI... I went from OEM 18" wheels/tires, to 20" wheels and 305/30 rear, 255/35 fronts. I checked the diameters, and OEM are 27" front/26.7" rear diameter, new tires are 27.01" front/27.24" rear...

I assume its the differences in tire diameters, but I thought as long as the difference between front to rear was less than 0.3", I'd be fine... the fronts are almost identical to OEM, but of course the rears are a good bit taller than the OEM rears... but from front to rear, it's only 0.23" difference...

Can I fix this without having to buy new tires? Will it harm anything long term to leave it as is?

Array · 10-27-2016, 12:51 AM

Check the code, I cant find a reason that the SES light would go off because of drive train changes.. Could be as simple as the gas cap

Any local auto store should be able to read it (AutoZone for free)

barncobob · 10-27-2016, 05:32 AM

My 05 Dodge 2500 diesel threw a code once...found out that U turn the key to ON 3 times and it shows the code on the odometer, pretty cool.

solteroblues · 10-27-2016, 08:34 AM

Turns out it was because of my high flow catalytic converters, just seemed really weird to have come on weeks after those were installed, but immediately after the new tires were!

10-27-2016, 12:00 AM	#1 (permalink)
solteroblues Base Member Join Date: Aug 2016 Location: atlanta Posts: 60 Drives: 2012 370Z Rep Power: 9	Service Engine Light after new tires/wheels? I've searched the site and came up with less than nothing... I had new wheels/tires installed today, and as soon as I drove out of the tire center, I noticed the service engine soon light came on. They were closing so it was too late to go back. FYI... I went from OEM 18" wheels/tires, to 20" wheels and 305/30 rear, 255/35 fronts. I checked the diameters, and OEM are 27" front/26.7" rear diameter, new tires are 27.01" front/27.24" rear... I assume its the differences in tire diameters, but I thought as long as the difference between front to rear was less than 0.3", I'd be fine... the fronts are almost identical to OEM, but of course the rears are a good bit taller than the OEM rears... but from front to rear, it's only 0.23" difference... Can I fix this without having to buy new tires? Will it harm anything long term to leave it as is?

10-27-2016, 12:51 AM	#2 (permalink)
Array Enthusiast Member Join Date: Jun 2014 Location: home.jpg Posts: 286 Drives: '12 Pearly White Rep Power: 11	Check the code, I cant find a reason that the SES light would go off because of drive train changes.. Could be as simple as the gas cap Any local auto store should be able to read it (AutoZone for free) __________________ 2012 370z 7AT- ES2 with PSS, K&N Drop-ins, LED's all around, Berk HFC, FI CBE non-res, KW V1's 2003 A4 5MT- The Beater

10-27-2016, 08:34 AM	#4 (permalink)
solteroblues Base Member Join Date: Aug 2016 Location: atlanta Posts: 60 Drives: 2012 370Z Rep Power: 9	Turns out it was because of my high flow catalytic converters, just seemed really weird to have come on weeks after those were installed, but immediately after the new tires were! Last edited by solteroblues; 10-27-2016 at 10:58 AM.

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10-27-2016, 05:32 AM	#3 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	My 05 Dodge 2500 diesel threw a code once...found out that U turn the key to ON 3 times and it shows the code on the odometer, pretty cool.