Bolt pattern of 5x112 is same on both those W124s (in fact on most late
model MBs). It is the offset that you need to pay attention to. The
W124's offset (ET 49mm) is stamped inside rim and should be the same on E
and TE - but you should double check if you are buying new rims.
You can use different widths (in the 6.5" to 7.5" range) easily on these
cars. With wider rims you can go with wider tires if you like, if the
offset is appropriate.
A smaller offset moves the inside edge of the wheel outward away from the
strut. e.g. going from a ET 49mm to a ET 40mm moves the rim outward by 9mm.
So, if you are going with a 195 or 205 width tire, a 6." or 7." wide rim
with the stock (49mm) offset is OK on both cars. If you want to use a 215
tire, you will need an offset around 40mm.
I installed the rims and tires from our '98 E320 (W210) onto our '87 300E
(W124). The W210 rims are 7.5" wide with a 41mm offset - this offset moves
the wheels out just enough (8mm) to provide clearance for the 215 wide tires
on the 300E.
Here is a picture from TireRack that shows offset:
Hope that helps. Ask the seller of the new rims what the the rim size (e.g.
7.0x15) and the offset (e.g. ET49) and post them if you are not sure.
Keep in mind, if you mount anything wider than 7.0", you have to bend the
inner fender lip of the front fender in to provide clearance. Anything
wider than 7.5" and you have to flare the fenders.
Scott: do you have any pics of your 300E with 7.5" wide wheels?
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