Spark plug Autolite or OEM BMW

I've put about 100 miles on them and the car seems just as happy as ever. Went for a spirited drive today out in the hills and the car felt responsive and strong through the power range.

Autolite a103 gapped to .055" will give you about a 5hp increase and last around 30,000 miles

I found that it had Autolite Iridum spark plugs. They didn’t look bad and were gapped appropriately but I replaced them anyway with the recommended NGK spark plugs. Car has ran perfectly since then with no misfires or stuttering.

I now have the new plugs which are autolite gapped at .027 as it is suggested by autolite and also in the Bentley book.

autolites 3923 platinumsgave me the same mpg as the expensive NGK platinum.....

Auto lights are trash, Bosch too. I can’t tell you how many times I get a misfire diag that the customer already put plugs in, only to find the garbage auto lights are the issue. A set of oem plugs always fixes it

I replaced the original ac Delco spark plugs (shown in picture, THEY LOOK BAD) and put with new auto light ones and changed the wire as well. However, after doing so, my truck has been running really rough, almost like it's cammed and misfiring, when its rolling in drive it like to have a little shake.

As long as it’s not auto lite plugs you should be good. I’ve seen those things hinder 3 separate rigs from running right. Once one cracked 100 miles after installing them, half way through a trip we had to sop at autozone and replace plugs

Don't even think the Autolite or Bosch last as long as Denso/NGK spark plugs.

autolites were fine 100 years ago

now stick with NGK or whatever OEM was. its not worth it to be fudging around and what little your gonna save may be burned up in less MPG using some other plug.