Upcoming service needs

[Msh911tt]

I have a 2011 M3 with 50k miles. It needs a front brake job and new spark plugs. I was quoted $1,100 for the brake job and $600 to install new spark plugs. I was also quoted $450 for the spark plug installation from another shop I have my 911 serviced at. My question is why does it cost so much to replace 8 spark plugs and why such a disparity in costs between the two shops? The other question is I have some mechanical ability and have replaced rotors and pads on other vehicles of lesser value. Is it recommended to leave the brake job to the professionals?

[E90beemerfan]

Originally Posted by Msh911tt

I have a 2011 M3 with 50k miles. It needs a front brake job and new spark plugs. I was quoted $1,100 for the brake job and $600 to install new spark plugs. I was also quoted $450 for the spark plug installation from another shop I have my 911 serviced at. My question is why does it cost so much to replace 8 spark plugs and why such a disparity in costs between the two shops? The other question is I have some mechanical ability and have replaced rotors and pads on other vehicles of lesser value. Is it recommended to leave the brake job to the professionals?

I recently did the spark plugs my self. No hassle if you ask me. Search up the DIY videos on here and see for your self if this is a job you feel comfortable doing.

Next week I will replace rotors and pads. Easy job, but you need the tools and a 7mm allen wrench (not always included in standard sets). The two screws holding the rotor on place (when the wheel is off) is difficult to remove and you might have to bore it out. At least this is the case for me. Order replacement screws.

Hope this helps.

[WingZeroX5]

Originally Posted by Msh911tt

I have a 2011 M3 with 50k miles. It needs a front brake job and new spark plugs. I was quoted $1,100 for the brake job and $600 to install new spark plugs. I was also quoted $450 for the spark plug installation from another shop I have my 911 serviced at. My question is why does it cost so much to replace 8 spark plugs and why such a disparity in costs between the two shops? The other question is I have some mechanical ability and have replaced rotors and pads on other vehicles of lesser value. Is it recommended to leave the brake job to the professionals?

If you have mechanical ability and did a brake job before, DIY it

Spark plugs are very easy, IMO the hardest part was removing the intake plenum. The plugs closest to the firewall are not difficult in skill level, just a bitch to get to.