Of course.
profile is not as important as tire type. A high mileage tire is usually a harder compound and will break loose easier..
A Lexus GS 350 can use a regular profile tires. A regular profile tire is cheaper.
You don't give the profile. If you put 235R16 in place of 255R16 that is a less wide tire, but if the profile is the same (the missing number, for example 255/60R16) it will be a shorter sidewall, the profile, the '60' is the % of width
The tire size will affect the mileage and performance. You can use a larger wheel with a smaller profile tire without noticeable affecting either.
Yes, you can use a different size tire as a spare, but it’s not recommended. Using a tire that significantly differs in size can affect vehicle handling, stability, and safety. If you must use a different size, it’s best to drive at reduced speeds and for a limited distance until you can replace it with a proper tire. Always consult your vehicle's owner manual for specific recommendations regarding spare tires.
Use an individual design on your profile.
sorry, but no, sadly you can't
Generally no for vehicles that were not designed to use differing tire sizes. For vehicles designed to use equal sizes, using different sizes can lead to unsafe handling quirks. This is especially true for using different sizes on the left and right of front or the rear. That is why a limited use spare tire has restrictions on speed, etc.
To use a bicycle tire valve stem adapter to inflate your tires with a different type of air pump, simply attach the adapter to the valve stem on your tire and then connect the other end of the adapter to the nozzle of the air pump. This will allow you to use the different type of air pump to inflate your tires.
Yes, 17 inch and 18 inch will fit. You may also have to use a lower profile tire.
Normally it has 19'' rims. To make it's fitting you have to use special low profile tires. The idea is that the diameter of the 22" rim with a tire should be the same like for the 19" rim with a normal tire.
You can Use this tire size calculator online to calculate different size tires and wheels on your ride. http://www.tire-size-calculator.com/ it is a great site that i use myself.