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Old 05-21-2019, 04:32 PM
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Join Date: Aug 2007
Location: Middle Haddam, CT
Posts: 250
Oversize tires

A couple of years ago I bought a new reproduction set of 5 Fuchs 15" wheels from Mercedes Classic for my 1972 300SEL 4.5. Tom Hanson recommended 205/65/15s to come close to the original tire diameter (25.3" for original 205/70/14s (adjusted for modern sizing) vs 25.5" for the new 15s.
I wanted to go a bit larger as I thought the originals looked too small for the car. Available charts indicated that going up one aspect ratio to 205/70/15 would result in a diameter of 26.3"...only .8" diameter more.
They fit and looked great on the car but....the spare wouldn't fit in the spare tire well!
How the hell can that be with only .8" difference in diameter? What didn't I understand here?
Berfinroy in CT
Present vehicles:
1973 300 SEL 4.5
1959 Rolls Royce Silver Cloud I
Past vehicles;
1958 Bentley S 1
1976 ex-Max Hoffman 6.9
1970 300SEL 2.8
1958 Jaguar MK IX
1961 Jaguar MK IX
1963 Jaguar E-type factory special roadster
1948 Plymouth woody
1955 Morgan plus 4
1966 Shelby GT350H Mustang
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Old 05-21-2019, 04:45 PM
Registered User
Join Date: Sep 2011
Posts: 552
Try letting the air out of the spare. LOL

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Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,
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