Got them at Costco because I’m dull.
But on the way home my car went into limp mode with a check engine light and a computer error light.
Called Costco and they said “we just did the tires” but when I reset the system by disconnecting the battery the traction control, power steering, and tire pressure lights came on.
And it’s still in limp mode.
Taking her to my guy later today.
Thanks Costco.
ETA: Turns out my coil packs and spark plugs went bad, it was just a coincidence that it happened after the tires.
ETA II: My guy said the spark plugs were all the wrong kind.
I have learned that some cars operate better with specific kinds of spark plugs. At some auto stores or mechanic shops, they may try to upsell you on better kinds, and for a lot of vehicles you do get what you put into it. However, on occasion for some cars, you actually will make things worse with those more expensive plugs. I had a car once where the upsell was always iridium plugs but they literally were worse than the cheaper ones and recommended to avoid for that specific motor.
This can also happen with gas. Some cars should never get higher octane fuels. Like some cars should only ever get 87 and no higher.
Really depends on the vehicle and unique needs of the engine. Usually the book will explain this or hardcore dedicated forums about their maintenance.
Also, buying your own OBD II code reader for like $30-50 can sometimes do wonders. I’ve had one for a decade now and when stuff goes wrong it is nice to be able to look up codes immediately and at least get some information or a vague idea on my own.
Theres no benefit to using “premium” gas in a car that doesn’t require it. Higher octane prevents dieseling in a high compression engine. It does nothing in a regular engine, it’s just an additional additive you don’t need.
It has a custom exhaust and intake so I wouldn’t be surprised if the previous owner put in “performance” plugs which then wore out the coil pack.
I have my own Bluetooth code reader but funnily enough my mechanic had it because he put his reader on it and accidentally left it in the shop. So I picked it up when I got my car today.