Probably fine, most commenters here don’t seem to be aware that water has a better cooling capacity than antifreeze.

I doubt 65/35 would be enough to alter the cooling performance enough to be a problem, unless you track your car or love redline.

Might want to check the alignment after that!

https://youtu.be/wf_mIlU82Ac

Summary: Narrow has better traction and control, wider has better braking. However the differences are fairly small, the difference between a quality tire and an average one will be bigger than these differences.