Hello and welcome.
I bet the vehicle handles a little differently due to the narrower front. I bet the front is slightly dipped too (might be a little noticeable to the naked eye)... and newer tires, if they are newer.
I use this website to visualize and evaluate my wheel/ tire changes.
https://www.wheel-size.com/calc/?wheel1 ... 0mm&sr=0mm
Is your vehicle AWD? If so, I am concerned the system might not like the discrepancy long term. When AWD owners go for staggered setups, the rears might be wide, but the overall diameters have to match the fronts.
Then, for all the systems that use the wheel speed sensors (ABS, VDC et al), I can't recall which wheel readings take precedence. Your rolling diameters are far enough off that some warning light might pop up.
Maybe the warning light issue only comes into play with a side-to-side discrepancy where the steering angle sensor is off. However, I'd get the correct tires on there.
Picture instructions in my signature below