Yes, that is reasonable
NO , rim size is incorrect.
Yes, they can. They must be mounted as a pair.
The equivalence is 225 50 R18 so that the diameter may be the same.
Yes they can
Yes, 235/60 R18 tires can be substituted with 225/65 R18 tires, but there are important considerations. The 225/65 R18 tires have a larger sidewall height and overall diameter, which can affect speedometer accuracy, handling, and clearance in the wheel well. It's essential to ensure that the vehicle can accommodate the change without causing rubbing or other issues. Always consult your vehicle's manual or a tire professional before making such substitutions.
Yes. I've done it. Fits well.
Sure, honey, technically you can slap those 225 55 R18 tires on instead of the 215 55 R18 tires. They'll fit on the same 18-inch wheel just fine. Just keep in mind your speedometer might be a tad off and your handling might feel a bit different. But hey, as long as you're not racing against Vin Diesel, you should be good to go.
Can it? Yes. Should you use this size? No. Your speedometer will read 58 at a true 60 mph. Handling, performance, ride, and fuel mileage will be adversely effected. If you want to go to a 55 series tire then install size 215/55-18 which is an excellent substitute.
No, it will be too large a diameter tire. Handling, ride, mileage, & power will suffer. Also your speedometer will be off.
Doubtful, that is a big change. You can usually go one size up or down with no problem, Not three.Doubtful, that is a big change. You can usually go one size up or down with no problem, Not three.
Yes bigger ones are better for rear wheels
Yes.