max tire width for Bathurst 10" and 9.5"

[HoustonGT]

Guys- What the max width for Bathurst 10" or 9.5" wheels (xxx/35/20)? I am getting various numbers from tire shops and it seems random as to what guide they go by. Can anyone point me to a reliable source or speak from experience?

I have the 10" on the rears and would like to go wide with the 9.5 up front and a slightly staggered look. Thanks!

Edit- they are going on a 2015 GT Premium non PP.

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[Niz55]

285 for 9.5 and 295 for 10

 

[stoli]

You can go 305 on the 10", but there will be some bulge.


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