[MBZ] early 190's with 14" wheels

[Kaleb C. Striplin]

The early 190's came with 14" wheels, what is the advantage to switching 
to the later 15" wheels?
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Kaleb C. Striplin/Claremore, OK
 89 560SEL, 87 300SDL, 85 380SE, 85 300D,
 84 250 LWB, 83 300TD, 81 300TD, 81 240D, 81 240D,
 76 450SEL, 76 240D, 76 300D, 74 240D, 69 250
Okie Benz Auto parts-email for used parts