At the dealer I work at in central Illinois, we charge $14.00 for a four tire rotation.
Your tires would definitely have to rotate if you are speeding !
In my area it costs $20-$32 to rotate and balance the tires.
Rotate tires 2 front 225 and 2 back 245
Sure, you can balance the tires. Any place that sells tires can balance your tires. You cannot rotate the tires as you have already stated they are not the same size. Balance but do not rotate.
On average you should rotate your tires every 6000 mile or 6 months.
It's a good idea to rotate your tires every so often.
Proper way to rotate tires on C240
Rotate your tires regularly every 5,000 miles for the best wear. Rotate at the very least every 10,000 miles.
You cannot rotate tires on a vehicle when the rear tires are wider than the front. They must stay where they are,
You don't need to rotate MY tires but, you need to when your car goes left or right when the wheel is straight.
You can find Walmart tires at Walmart. I know they now have a service center to fix tires or to sell new ones. We had a tire fixed there a few years ago.