brighton98 Posted August 3, 2015 Share Posted August 3, 2015 my '10 Impreza has 35K miles and I'm (finally) going to change spark plugs. Even with low miles, I'm wondering if the wires should be done after 5 years as will.. I know, NGK/OEM wires only. Quote Link to comment Share on other sites More sharing options...
valvestem Posted August 5, 2015 Share Posted August 5, 2015 (edited) I would use OEM ones myself. Just in case some sensor works off them. But I had a 2003 Impreza with many miles, the wires were fine and the car ran well. Edited August 5, 2015 by valvestem Quote Link to comment Share on other sites More sharing options...
Rooster2 Posted August 5, 2015 Share Posted August 5, 2015 OEM wires are good for far more then 35K miles. When I bought my 99 OBW in 2006, it had 148K on the odo. It still had its original plugs and wires. Wires were still going strong. Plugs were worn down to nothing. 1 Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted August 5, 2015 Share Posted August 5, 2015 what plugs come ina 10 from the factory? Coppers would likely be getting worn but, if double platinum you can go to 60K easy. Quote Link to comment Share on other sites More sharing options...
86 Wonder Wedge Posted August 5, 2015 Share Posted August 5, 2015 (edited) NGK Laser Plats are OE for the car. IIRC, replacement isn't scheduled till 60K. Unless you're burning oil or are just super anal about peak performance, I'd leave them alone. Replacements are ~$7/ea from a local parts house, I think. EDIT: If you want to replace due to age, I understand, but plugs don't age like wires/rubber does. I'd remove and inspect the wires for damage/cracking/hardness, but replace only if damage found. Re-inspect at 50K. Edited August 5, 2015 by 86 Wonder Wedge 1 Quote Link to comment Share on other sites More sharing options...
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