140 vs 150 rear tyre

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wobbler

Race Dog
Joined
Jun 21, 2015
Messages
757
Reaction score
18
Location
Cape Town/Mozambique
Bike
KTM 990 Adventure
Quick (probably stupid noob) question...

Why would my bike have a 140 rear tyre as opposed to the 150 it is supposed to have.
It is a Mitas EO7.

Also I have a thing about matched tyre sets. I will change tyres if I buy any vehicle with mismatched tyres. Currently a Hiedenau of some description (Something 60 seems to spring to mind)
Now I see here that it is common for the DS/ Adventure guys to use different tyres front and back. Am I correct in assuming this is because brand x front is better than brand y rear and visa versa for the front?
 
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