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Originally Posted by Mr.DJ
Well, here's a thread that I found while 'surfing the web':
http://www.300cforums.com/forums/arc...hp/t-4328.html
This question has been asked many times and has also been answered time and time again by many of us who operate/have operated tire/wheel businesses throughout the years...myself included. The correct bolt pattern for the new generation '300 series' models is 5x115mm and not 5x114.3mm which is the bolt pattern of the '300M' (the previous FWD version). Although many owners are running the 5x114.3mm bolt pattern on their new '300 series' models without a problem, it also appears that many still continue to experience problems as well.
Due to the limited availability of aftermarket wheel manufacturers that offer the correct bolt pattern, many '300 series' owners have resorted to running the incorrect bolt pattern and utilizing 'hub-centric' spacers to make them work. Running a wheel with the incorrect bolt pattern and improper off-set places additional stress upon your vehicle's wheel hub assemblies/wheel bearings, which in turn can lead to disc-brake rotor warpage, improper/uneven brake pad wear, and/or mild to severe 'ride disturbance' problems...including, but not limited to uneven tire wear.
Here's a quote taken from a 300mclubs.org member in response to another member asking if he/she could actually mount a set of '300C' tires/wheels onto his/her '300M':
"...the bolt pattern is slightly different, 114.3mm on the M to 115mm I believe on the new 300. While this ain't much, we have had much debate, especially on what that could mean in the long term. You are putting more strain on the studs and lug nuts as they wont be seating 100% flush with where they are supposed to, and you may also be asking for added vibration on things like the wheel bearings." |
After I started this thread I found a lot of discussion on another website with a similar consensus. There appears to be no way to "make" 114.3's fit our wheels correctly/perfectly. Bummer. I am plain tuckered out trying to find rims I like, and with the correct bolt pattern, offset, and weight.