wheel difference

[BLK3]

Is there a size difference in thefront and rear wheels ? I see a code letter difference in the description on the door jam from ft. to rr.

[ctrlraven]

Front and rear wheels are both 18x8".

[fastblackmerc]

Frt & rear wheels are the same.

Tires on the 2003's are the same at all four corners.

Tires on the 2004's are different, rears are larger than the fronts... has to do with traction control which is standard on all 2004's.

[arejayesss]

Frt & rear wheels are the same.

Tires on the 2003's are the same at all four corners.

Tires on the 2004's are different, rears are larger than the fronts... has to do with traction control which is standard on all 2004's.

Huh??? They are different on my '03

[Bluerauder]

Frt & rear wheels are the same.

Tires on the 2003's are the same at all four corners.

Tires on the 2004's are different, rears are larger than the fronts... has to do with traction control which is standard on all 2004's.
Yes, wheels are the same. However, the bolded statement above ^^^ is not correct. The 2003 MMs also have 235/50ZR18 fronts and 245/55ZR18 rears.

2003 300A models without traction control CAN use the same size on all 4 corners but they didn't come that way OEM. 2003 300B and 2004 MMs need to maintain the tire size ratio to prevent the T/C from going haywire.

[BLK3]

What I was referencing is the wheel codes listed on the drivers door. I believe the fronts have a prefix beginning with 3J and the rears with a 7X or something similar as I am doing this from memory. Does anyone know what this refers to, maybe offset?

[LordVader]

Frt & rear wheels are the same.

Tires on the 2003's are the same at all four corners.

Tires on the 2004's are different, rears are larger than the fronts... has to do with traction control which is standard on all 2004's.

Almost made me choke on my soda. All MM's regardless of year have two differents size tires - 235/50/18 on the front and 245/55/18 on the rear. If they are same on all four corners it's because someone put them on that way. I did it last winter to put on some all-seasons to get me through the season. Back to the original sizes now.