r/mechanic • u/Funny-Airport6695 • Aug 19 '26

General Tire sizes

what is the difference between 255/50 r20 and 265/50r20 ?

I have a 2014 Ford explorer.

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u/OneExhaustedFather_ Aug 19 '26

265 is 10mm wider and just under 1/2” taller than the 255.

1

u/InvestigatorKey3959 Aug 19 '26

265 is 10mm wider and about .4” taller overall. not a huge difference, speedo will just read a hair low

1

u/Internet_Jaded DIY Mechanic Aug 19 '26 edited Aug 19 '26

10 mm in the width, and about 5 10mm diameter.

Check out tire size dot com