[Rob99]

I’ve searched and found a bunch of older threads but no conclusion on how those members made out.
I have the square setup now 245/40/20 and want to change to,
245/45/20 front
275/40/20 rear on new rims, 9.5”.
Some posts I’ve read say it will fit others not a clear answer, but there’s not a very big gap now from top of tire to the fender opening.(stock susp.)

If I went with the stock SS tire sizes that gets me the width increase but that sidewall diminishes a little more than my setup now so that’s not an option.
Trying to balance the two different dimensions,( width & sidewall) the tire calculator shows 265/40 as a compromise, would the 245/45’s up front be ok?
TIA.
Rob.