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Rolling radius

Can any one confirm is the rolling radius (give or take tread pattern variations) the same from 7.50 r 16 compared to 235 / 85 r16

I have a cut in a side wall and am looking at using a 7.50 as a spare the rest of the car being 235 / 85 r 16's

Lee D

Reply to
Lee_D
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Talking to myself is bad form I know but found the answer here,

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seems to depend on the tyre tread, the Commercial is bang on the same rolling radius and another as 12mm difference, negligble I guess given undulations on a road surface warping tyre walls anyway.

:-)

Lee

Reply to
Lee_D

Michelin's figures for the same tread pattern (O/R 4x4):

235/85R16 2442mm Rolling circumference 363mm Static Laden Radius

7.50R16

2450mm Rolling circumference 373mm Static Laden Radius

That's insignificant to my eyes.

Reply to
Dougal

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