Dave Plowman (News) wrote:
In article ,
Jim K.. wrote:
Still hopefully the same external diameter, otherwise the car would (try to)
go round in circles.



We call them differentials...

Good luck running different sized tyres on the driven axle. The
differential will over-heat and fail.


Sounds improbable. Maybe a limited slip diff wouldnt like it but I cant
see a regular diff being seriously stressed by a small difference in
rolling radius. Many space savers *are* smaller in terms of overall
diameter/rolling radius.

Tim

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