The stock 205/70R14 tires on my silver 380SE W126 are shot. It's a Sunday driver and not driven hard. I'm thinking of running 195/75R14 size. Will the speedo be accurate?

I noticed this thread: People with 14" wheels, what size tires are you running? where some members are running this size on their 300D with the same bundt wheels. Would this be OK with the weight of the W126?

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

The wheels on the 123 300D are not the same size as those on the 126. the 126 ones are wider.

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Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"