Spark plugs

[Beemingallover]

My wife has a 2009 Z4 E89 2.3 idrive 49k mls, at what mileage do you change the spark plugs? It has had annual oil services despite low use.
Thanks.

 

[B21]

On a 'mild' tune engine like that 60,000 km is the usual BMW quoted..some places suggest 100,000 km..

Personally I'd go for 60k kms..

 

[Beemingallover]

[ref]B21[/ref], thks, my thoughts.

 

[SonnyA85]

Are you doing it yourself? If so it costs next to nothing so you may as well do it every 6 years or every 60k whatever is sooner.

If you're paying someone else double check they actually changed them. A lot of mechanics don't bother

 

[enuff_zed]

Are you doing it yourself? If so it costs next to nothing so you may as well do it every 6 years or every 60k whatever is sooner.

If you're paying someone else double check they actually changed them. A lot of mechanics don't bother

Yup, they can spot a mug a mile off! :roll:

 

[Phoenixboy]

Are you doing it yourself? If so it costs next to nothing so you may as well do it every 6 years or every 60k whatever is sooner.

If you're paying someone else double check they actually changed them. A lot of mechanics don't bother

Yup, they can spot a mug a mile off! :roll:

 

[Smartbear]

Are you doing it yourself? If so it costs next to nothing so you may as well do it every 6 years or every 60k whatever is sooner.

If you're paying someone else double check they actually changed them. A lot of mechanics don't bother

Yup, they can spot a mug a mile off! :roll:

I believe mugs can also be routinely changed, there’s a bulletin somewhere if you search google
Rob

 

[ronk]

When my car went in for a service, they wanted to change the plugs - It had about 10k on the clock!

 

[B21]

When my car went in for a service, they wanted to change the plugs - It had about 10k on the clock!

Turbo charged cars eat plugs faster..N54 is a notorious plug chomper..hence their prudence…

 

[ronk]

But 10k ?

 

[B21]

But 10k ?

25k miles is the normal recommendation for N54 plugs..

Maybe they took one look at you and reckoned you were running extra boost?

 

[ronk]

But 10k ?

25k miles is the normal recommendation for N54 plugs..

Maybe they took one look at you and reckoned you were running extra boost?

The original geriatric hooligan!

(As a footnote, it’s just turned over 15k and due an oil service post Summer/Germany trip)