Guntar13

I do know that the speedo is off but not a ton. Ive got 235 tires on it and of course the factory is 225.

Radi

Changing from a 225 to a 235 makes the speedo read 2% low.
225 has a 88.9" circumference, 235 is 90.7", assuming no tread wear.

BlueRidgeMark

Agree, this needs to be done. Even though the 235s should be close enough, there can be other problems with speedometers & odometers.

Just as a matter of establishing a solid baseline, this would be a good thing to do.