Original tires were 6.70 x 15.Conversion charts state 20575R15 or 21570R15 will fit. Which is the better size to use on a 56 Thunderbird?

25

Asked by Jan 11, 2008 at 07:19 PM about the 1956 Ford Thunderbird

Question type: Maintenance & Repair

2 Answers

20575R15

46,695

Yes, this is a smaller diameter but slightly wider tire that will provide excellent handling for you without making the vehicle look "tire heavy".

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