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225/50/r16
Crutchfield.com has a easy to use tool to find out. It asks you the year, make, model, elt... An alero has 6x9 in the rear.
4x6
6.5" with separate tweeters in front and 6.5" no tweeters in the rear.
Curb weight (no passengers or cargo) is between 2,946 lbs and 3.147 lbs depending on engine size and body style.
15 mm
If you are looking for the tire/rim size for a 2003 Oldsmobile Alero. It is listed here. Tire Size - 215/60/R15" Rims Size - 15 inches
2.4 I have seen some equipped with a 3400
The size of the oil pan screw for the 2001 Oldsmobile Alero is one half with the threads one eighth inch to 27. The screws can be purchased at any auto parts store.
Depending on the engine size, it is either under the hood, on the passenger side firewall, or under the dash. More Auto Repair Help at: www.JustAutoRepair.com
The factory tire size for a 2004 Oldsmobile Alero is 255-50 R16. These tires can be purchased at stores such as Firestorm or Goodyear.
From the factory there is no tweeters in the speaker system.