Apart from the stock factory size of P225/65R17, what other possible Tire sizes can be installed on my RX350 (2009).. WHich tire is most readily available so hopefully the cheapest?

 

I cannot ever imagine looking for something that is so vitally important to my and other safety and my primary deciding factor being the cheapest price... be it tires, a heart or eye surgeon, or the doctor doing my vesectomy. My advice to any friends/family is to never skimp on tires or brakes... going fast isn't important.. .stopping fast is

Are you sure you have the 17" tires, most had the option of the 18's

 

Thats it for 17'' wheels........Step up to 18's & you'll have more choices , size wise as well as all the different brands. 235's-255's........