Is it possible to put wider tires like the ones on the X5 on the RX? I just like the look of it but I also read that wider tires aren't that great in terms of safety. Any thoughts or opinions are appreciated.

 

You use wider tires. Not really sure what tire size the X5 uses but you surely can use wider tires than the stock ones. Search on Discount Tire and it'll show the max width you can use with the 20" rim is 265/50. OEM is 235/55 so that is 30 mm wider or around 1.2 inches.